bd6184gul ROHM Co. Ltd., bd6184gul Datasheet
bd6184gul
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... System LED Drivers for Mobile Phones 8 LEDs LDO 4ch BD6184GUL ●Description BD6184GUL is “Intelligent LED Driver” that is the most suitable for the cellular phone. It has 3 8LED driver and output variable LDO4ch for LCD Backlight can be developed widely from the High End model to the Low End model. ...
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... BD6184GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Parameter 【Circuit Current】 VBAT Circuit Current 1 VBAT Circuit Current 2 VBAT Circuit Current 3 VBAT Circuit Current 4 VBAT Circuit Current 5 VBAT Circuit Current 6 VBAT Circuit Current 7 【LED Driver】 LED Current Step (Setup) ...
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... BD6184GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Parameter 【Regulator (LDO1)】 Output Voltage Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF 【Regulator (LDO2)】 Output Voltage Output Current ...
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... BD6184GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Parameter 【Regulator (LDO3)】 Output Voltage Output Current Dropout Voltage Load Stability Input Voltage Stability Ripple Rejection Ratio Short Circuit Current Limit Discharge Resister at OFF 【Regulator (LDO4)】 Output Voltage Output Current ...
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... BD6184GUL ●Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=3.6V, VIO=1.8V) Parameter 2 【SDA, SCL】(I C Interface) L level Input Voltage H level Input Voltage Hysteresis of Schmitt trigger Input L Level Output Voltage Input Current 【RESETB】(CMOS Input Pin) L Level Input Voltage H Level Input Voltage Input Current 【 ...
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... BD6184GUL ●Block Diagram / Application Circuit Example 1 VBAT VBATCP VBAT1 2.2µF/10V VIO ( ) ( ) RESETB SCL SDA I/O WPWMIN GND1 GND2 Fig.2 Block Diagram / Application Circuit Example 1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1μF/10V 1μF/10V Charge Pump OVP Charge Pump ...
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... BD6184GUL ●Block Diagram / Application Circuit Example 2 VBAT VBATCP VBAT1 2.2µF/10V VIO ( ) ( ) RESETB SCL SDA I/O WPWMIN GND1 GND2 Fig.3 Block Diagram / Application Circuit Example 2 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1μF/10V 1μF/10V Charge Pump OVP Charge Pump ...
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... BD6184GUL ●Block Diagram / Application Circuit Example 3 VBAT VBATCP VBAT1 2.2µF/10V VIO ( ) ( ) RESETB SCL SDA I/O WPWMIN GND1 GND2 Fig.4 Block Diagram / Application Circuit Example 3 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1µF/10V 1µF/10V Charge Pump OVP Charge Pump ...
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... BD6184GUL ●Pin Arrangement ［Bottom View］ LED7 D LED6 LED5 C B LED3 Total 35 Ball www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. LDO4O LDO3O LDO2O LED8 GND2 VBAT1 LEDGND NC2 NC3 Index LED4 NC1 LED２ GND1 RESETB LED1 WPWMIN ...
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... BD6184GUL ●Package Outline VCSP50L3 CSP small package SIZE : 3.15mm x 3.10mm(A difference in public:X,Y Both ±0.05mm) Height : 0.55mm max A ball pitch : 0.5 mm 1PIN MARK 35-φ0.25±0.05 (φ0.15)INDEX POST www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. BD6184 3.15±0. ...
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... BD6184GUL ●Pin Functions No Ball No. Pin Name I VBATCP - 2 E4 VBAT1 - VIO - 8 D5 SDA I SCL CPGND - 11 B4 RESETB LEDGND - 13 A4 C1N I C1P I C2N I C2P I VOUT O 18 ...
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... BD6184GUL ●Equivalent Circuit VBAT J L VBAT VIO Q R VBAT VBAT V W VBAT VBAT www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. C VBAT H VBAT M VBAT VBAT VBAT S VBAT VBAT VBAT X VBAT VoS VIO Fig.7 Equivalent Circuit 12/37 Technical Note E VBAT I VIO ...
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... BD6184GUL 2 C BUS Format ●I The writing/reading operation is based on the I ・Slave address ・Bit Transfer SCL transfers 1-bit data during H. SCL cannot change signal of SDA during H at the time of bit transfer. If SDA changes while SCL is H, START conditions or STOP conditions will occur and it will be interpreted as a control signal. ...
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... BD6184GUL ・ Writing protocol A register address is transferred by the next 1 byte that transferred the slave address and the write-in command. The 3rd byte writes data in the internal register written in by the 2nd byte, and after 4th byte or, the increment of register address is carried out automatically. However, when a register address turns into the last address set to 00h by the next transmission ...
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... BD6184GUL ● Timing Diagram SDA t LOW SCL t HD;STA t HD;DAT S ● Electrical Characteristics(Unless otherwise specified, Ta=25 ℃ , VBAT=3.6V, VIO=1.8V) Parameter 2 【 BUS format 】 SCL clock frequency LOW period of the SCL clock HIGH period of the SCL clock Hold time (repeated) START condition ...
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... BD6184GUL ● Register List Address W 00h 01h 02h W WPWMEN - 03h W - IMLED(6) 04h - - - 05h W - IW5(6) 06h W - IW6(6) 07h W - IW7(6) 08h W - IW8(6) 09h W THL (3) THL (2) 0Ah - - - 0Bh - - - 0Ch - - - 0Dh - - - 0Eh - - - 0Fh - - - 10h - - - 11h - - - 12h - - - 13h 14h W LDO2VSEL3 LDO2VSEL2 LDO2VSEL1 LDO2VSEL0 LDO1VSEL3 LDO1VSEL2 LDO1VSEL1 LDO1VSEL0 ...
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... BD6184GUL ● Register Map Address 00h < Software Reset > Address R/W Bit7 00h W - Initial Value 00h - Bit[7:1] : (Not used) Bit0 : SFTRST Software Reset “0” : Reset cancel “1” : Reset(All register initializing) Refer to “Reset” for detail. Address 01h < LED Pin function setting> ...
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... BD6184GUL Address 02h < LED Power Control> Address R/W Bit7 02h W WPWMEN Initial Value 00h 0 Bit7 : WPWMEN External PWM Input “WPWMIN” terminal Enable Control (Valid/Invalid) “0” : External PWM input invalid (Initial Value) “1” : External PWM input valid Refer to “ ● Current Adjustment” for detail. ...
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... BD6184GUL Address 03h < Main group LED Current setting(Normal Mode) > Address R/W Bit7 03h W - Initial Value 00h - Bit7 : (Not used) Bit[6:0] : IMLED (6:0) Main Group LED Current Setting “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “ ...
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... BD6184GUL Address 05h < LED5 Current setting(Independence control) > Address R/W Bit7 05h W - Initial Value 00h - Bit7 : (Not used) Bit[6:0] : IW5 (6:0) LED5 Current setting “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “ ...
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... BD6184GUL Address 06h < LED6 Current setting(Independence control) > Address R/W Bit7 06h W - Initial Value 00h - Bit7 : (Not used) Bit[6:0] : IW6 (6:0) LED6 Current setting “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “ ...
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... BD6184GUL Address 07h < LED7 Current setting(Independence control) > Address R/W Bit7 07h W - Initial Value 00h - Bit7 : (Not used) Bit[6:0] : IW7 (6:0) LED7 Current setting “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “ ...
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... BD6184GUL Address 08h < LED8 Current setting(Independence control) > Address R/W Bit7 08h W - Initial Value 00h - Bit7 : (Not used) Bit[6:0] : IW8 (6:0) LED8 Current setting “0000000” : “0000001” : “0000010” : “0000011” : “0000100” : “0000101” : “0000110” : “0000111” : “0001000” : “0001001” : “ ...
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... BD6184GUL Address 09h < Main Current slope time setting > Address R/W Bit7 09h W THL(3) Initial Value C7h 1 Bit[7:4] : THL (3:0) Main LED current Down transition per 0.2mA step “0000” : 0.256 ms “0001” : 0.512 ms “0010” : 1.024 ms “0011” : 2.048 ms “0100” : 4.096 ms “0101” : 8.192 ms “ ...
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... BD6184GUL Address 13h <LDO Power Control> Address R/W Bit7 13h W/R - Initial Value 00h - Bit[7:4] : (Not used) Bit3 : LDO4EN LDO4 control (ON/OFF) “0” : LDO4 OFF (Initial Value) “1” : LDO4 ON Bit2 : LDO3EN LDO3 control (ON/OFF) “0” : LDO3 OFF (Initial Value) “1” : ...
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... BD6184GUL Address 15h < LDO3 Vout Control, LDO4 Vout Control > Address R/W Bit7 15h R/W LDO4VSEL3 LDO4VSEL2 LDO4VSEL1 LDO4VSEL0 LDO3VSEL3 LDO3VSEL2 LDO3VSEL1 LDO3VSEL0 Initial Value A4h 1 Bit[7:4] : LDO4VSEL [3:0] “0000” : 1.20 V “0001” : 1.30 V “0010” : 1.50 V “0011” : 1.60 V “0100” : 1.80 V “0101” : 2.20 V “0110” : 2.40 V “0111” : 2.50 V “ ...
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... BD6184GUL ● Reset There are two kinds of reset, software reset and hardware reset (1) Software reset ・ All the registers are initialized by SFTRST="1". ・ SFTRST is an automatically returned to "0". (Auto Return 0). (2) Hardware reset ・ It shifts to hardware reset by changing RESETB pin “H” → “L”. ...
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... BD6184GUL ● DC/DC Start DC/DC circuit operates when any LED turns ON. (DCDCFON=0) When the start of theDC/DC circuit is done, it has the soft start function to prevent a rush current. Force of VBAT and VIO follows. VBAT VIO RESETB EN (*) VOUT LEDcurrent (*) An EN signal means the following in the upper figure. ...
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... BD6184GUL Mode transition The transition of boosts multiple transits automatically by VBAT Voltage and the VOUT Pin Voltage. condition① mode down=”H” mode down=”H” The mode transition of the charge pump works as follows. ＜ x1.0 → x1.5 → x2.0 Mode transition ＞ The transition of the mode is done when VOUT was compared with VBAT and the next condition was satisfied. ...
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... BD6184GUL ● LED Driver The LED driver of 8ch is constructed as the ground plan. Equivalence control is possible with LED1 ~ 4(LED4 can choose use/un-use with a register W4MD.). LED5, LED6, LED7, LED8 is controllable individually. As for LED5 ~ 8, grouping setting to the main control is possible, and main control becomes effective for the main group in the allotment ...
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... BD6184GUL LED Composition which can be set up is the following. The main, other1 and other2 are controllable to each.(Enable and current setting) Main Other1 (PWM) 8LEDs - 7LEDs - 7LEDs 1LED 6LEDs - 6LEDs 1 LED 6LEDs 2 LEDs 6LEDs 1 LED 5LEDs - 5LEDs 1 LED 5LEDs 2 LEDs 5LEDs ...
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... BD6184GUL ● Current Adjustment ・ When the register setting permits it, PWM drive by the external terminal (WPWMIN) is possible. Register: WPWMEN ・ suitable for the intensity correction by external control, because PWM based on Main LED current of register. WPWMEN (Register " Normal operation " depends on the setup of each register. ...
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... BD6184GUL ● Slope Process ・ Slope process is given to LED current to dim naturally. ・ LED current changes in the 256Step gradation in sloping. ・ Up(dark → bright),Down(bright → dark) LED current transition speed are set individually. Register : THL(3:0) Register : TLH(3:0) ・ Main LED current changes as follows at the time as the slope. ...
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... BD6184GUL ● About the Start of LDO1 ~ LDO4 It must start as follows. VBAT VIO LDO1EN or LDO2EN or LDO3EN or LDO4EN LDO1O or LDO2O or LDO3O or LDO4O (LDO output) <Start Sequence> VBAT ON (Enough rise up) → VIO ON (Enough rise up) → Reset release → LDO ON (Register access acceptable) <End Sequence> ...
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... BD6184GUL ● PCB pattern of the Power Dissipation Measuring Board st 1 layer(component layer th 5 layer th 7 layer www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved layer(solder) Fig.25 PCB Pattern 35/37 Technical Note layer th layer th layer 2010.07 - Rev.A ...
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... BD6184GUL ● Notes for Use (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc ...
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... BD6184GUL ● Ordering Part Number Part No. Part No. VCSP50L3 (BD6184GUL) 1PIN MARK 3.15±0.05 0.06 S 35- φ 0.25±0. φ 0.15)INDEX POST 0.325±0.05 P=0.5×5 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved ...
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No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...