LTC3209EUF-2#TRPBF Linear Technology, LTC3209EUF-2#TRPBF Datasheet
LTC3209EUF-2#TRPBF
Specifications of LTC3209EUF-2#TRPBF
Available stocks
Related parts for LTC3209EUF-2#TRPBF
LTC3209EUF-2#TRPBF Summary of contents
Page 1
... QFN Package ■ U APPLICATIO S ■ Video/Camera Phones with QVGA+ Displays , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patents, including 6411531 U TYPICAL APPLICATIO LTC3209-1 6 MAIN/1 CAM Operation 2.2µ ...
Page 2
... Storage Temperature Range ................. –65°C to 125° SCL SDA 14 13 CAMHL 12 CAM PART MARKING ORDER PART NUMBER 32091 LTC3209EUF-2 The ● denotes the specifications which apply over the full operating ° 3.6V BAT1,2 CONDITIONS Mode, LED Disabled CPO 1.5x Mode CPO ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T unless otherwise noted. PARAMETER White LED Current (MAIN1-6), 8-Bit Linear DAC Full-Scale LED Current Minimum (1LSB) LED Current LED Current Matching LED Dropout Voltage White LED Current (CAM), LTC3209-1, 4-Bit Linear ...
Page 4
LTC3209-1/LTC3209-2 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T unless otherwise noted. PARAMETER REF VR REF RR REF Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure ...
Page 5
W U TYPICAL PERFOR A CE CHARACTERISTICS 2x Mode Charge Pump Open-Loop Output Resistance vs Temperature (2V –V )/I BAT CPO CPO 3 BAT V = 4.8V CPO 3 2.2µF 3.4 ...
Page 6
LTC3209-1/LTC3209 TYPICAL PERFOR A CE CHARACTERISTICS LTC3209-1 CAM Pin Dropout Voltage vs CAM Pin Current 400 V = 3.6V BAT 360 320 280 220 200 160 120 100 200 300 400 CAM PIN CURRENT ...
Page 7
CTIO S (LTC3209-1/LTC3209-2) CPO (Pin 1/Pin 1): Output of the Charge Pump Used to Power LEDs. A 2.2µF X5R or X7R ceramic capacitor should be connected to ground. MAIN1-6 (Pins ...
Page 8
LTC3209-1/LTC3209-2 W BLOCK DIAGRA 850kHz OSCILLATOR V BAT1 – V BAT2 + + – R REF DV 1.23V CC CAMHL SDA SCL 8 C1P C1M C2P CHARGE PUMP ENABLE CP CONTROL LOGIC MASTER/SLAVE REG SHIFT REGISTER C2M GND CPO MAIN1 ...
Page 9
U OPERATIO The LTC3209-1 has 6 MAIN outputs, 1 CAM output and 1 AUX output. The LTC3209-2 has 5 MAIN outputs, 2 CAM outputs and 1 AUX output. Power Management The LTC3209-1/LTC3209-2 use a switched capacitor charge pump to boost ...
Page 10
LTC3209-1/LTC3209-2 U OPERATIO Consider the example of driving white LEDs from a 3.1V supply. If the LED forward voltage is 3.8V and the current sources require 100mV, the advantage voltage for 1.5x mode is 3.1V • 1.5 – 3.8V – ...
Page 11
U OPERATIO Serial Port 2 The microcontroller compatible I C serial port provides all of the command and control inputs for the LTC3209-1/ LTC3209-2. Data on the SDA input is loaded on the rising edge of SCL loaded ...
Page 12
LTC3209-1/LTC3209-2 U OPERATIO CAMHL The CAMHL pin quickly selects the camera high register for flash applications without reaccessing the I When low the CAM current range will be controlled by the camera low 4-bit register. When CAMHL is asserted high ...
Page 13
U OPERATIO LTC3209-1/LTC3209-2 320912fa 13 ...
Page 14
LTC3209-1/LTC3209-2 U OPERATIO REGA, MAIN LED 8-Bit DAC Data MSB MAIN D7 MAIN D6 MAIN D5 REGB, CAMERA LED 4-Bit High and 4-Bit Low DAC Data MSB HIGH BITS CAM D3 CAM D2 CAM ...
Page 15
U OPERATIO START and STOP Conditions A bus-master signals the beginning of a communication to a slave device by transmitting a START condition. A START condition is generated by transitioning SDA from high to low while SCL is high. When ...
Page 16
LTC3209-1/LTC3209 APPLICATIO S I FOR ATIO V , CPO Capacitor Selection BAT The style and value of the capacitors used with the LTC3209-1/LTC3209-2 determine several important parameters such as regulator control loop stability, output ripple, charge pump strength ...
Page 17
U U APPLICATIO S I FOR ATIO lose considerable capacitance over that range. Z5U and Y5V capacitors may also have a very poor voltage coefficient causing them to lose 60% or more of their capacitance when the rated voltage is ...
Page 18
LTC3209-1/LTC3209 APPLICATIO S I FOR ATIO Power Efficiency To calculate the power efficiency (η white LED driver chip, the LED power should be compared to the input power. The difference between these two numbers repre- sents ...
Page 19
... SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights Package 20-Lead Plastic QFN (4mm × ...
Page 20
... LTC3251 500mA (I ), 1MHz to 1.6MHz Spread Spectrum OUT Step-Down Charge Pump LTC3440 600mA (I ), 2MHz Synchronous Buck-Boost OUT DC/DC Converter ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● C3 2.2µF 4x25mA ...