mic2219 Micrel Semiconductor, mic2219 Datasheet
mic2219
Related parts for mic2219
mic2219 Summary of contents
Page 1
... MIC2219 General Description The MIC2219 is a dual µCap low dropout regulator. The first regulator is capable of sourcing 150mA, while the second regulator can source up to 300mA. Ideal for battery operated applications, the MIC2219 offers 1% accuracy, extremely low dropout voltage (80mV @ 100mA), and extremely low ground current, only 48µA total. ...
Page 2
... Micrel marketing. Pin Configuration VIN 1 EN1 2 EN2 3 CBYP 4 FB1 5 10-Pin 3mm × × × × × 3mm MLF™ (ML) (Top View) M9999-042105 Voltage* Pb-Free (Vo1/Vo2) MIC2219-PSYML 3.0V/3.3V 10 VOUT1 9 VOUT2 FB2 6 GND 2 Micrel, Inc. Junction Temp. Range Package –40°C to +125°C 10-Pin 3× ...
Page 3
... MIC2219 Pin Description Pin Number Pin Name 1 VIN 2 EN1 3 EN2 4 CBYP 5 FB1 6 GND 7 FB2 8 N/C 9 VOUT2 10 VOUT1 EP GND April 2005 Pin Function Supply Input: (VIN1 and VIN2 are internally tied together.) Enable Input to Regulator 1: Enables regulator 1 output. Active high input. High = on, low = off. Do not leave floating. ...
Page 4
... MIC2219 Absolute Maximum Rating Supply Input Voltage (V ) .................................... Enable Input Voltage (V ) ................................... Power Dissipation (P ) ............... Internally Limited, Note 3 D Junction Temperature .............................. –40°C to +125°C Storage Temperature (T ) ......................... –65°C to 150°C S Lead Temperature (soldering, 5 sec.) ....................... 260°C Electrical Characteristics +1.0V for higher output of the regulator pair; C ...
Page 5
... MIC2219 Note 6. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. For outputs below 2.25V, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25V. Minimum input operating voltage is 2.25V. ...
Page 6
... MIC2219 Typical Characteristics PSRR Output 100nF BYP C = 10nF 60 BYP 1nF BYP OUT I = 150mA OUT C = 1µF OUT 0 10k 10 100 1k 100k 1M FREQUENCY (Hz) Spectral Noise Density Output 2 10E-6 100µA Load 1E-6 100E 1µF OUT C = 1µ 0.01µF ...
Page 7
... MIC2219 Typical Characteristics (cont.) Ground Current vs. Output Current LDO1 LDO1 Only 5 LDO2 Disabled (V = LOW) EN2 100 150 OUTPUT 1 LOAD CURRENT (mA) Ground Current vs. Output Current 60 50 Both Enabled Both LDOs Active LDO1 = 150mA 10 Output Current LDO2 Varied from 0 to Full Load ...
Page 8
... MIC2219 Functional Characteristics Enable Characteristics Time (100µs/div) M9999-042105 C = 1µ 1µF OUT C = 10nF BYP V = 4.2V IN Load Transient Response (LDO 1µ 1µF OUT C = 0.01µF BYP +1V IN OUT Time (4µs/div) 8 Micrel, Inc. Load Transient Response (LDO 1) 150mA 100µ ...
Page 9
... Input Capacitor Good bypassing is recommended from input to ground to help improve AC performance. A 1µF capacitor or greater located close to the IC is recommended. Bypass Capacitor The internal reference voltage of the MIC2219 can be by- passed with a capacitor to ground to reduce output noise and April 2005 LDO1 LDO2 ...
Page 10
... MIC2219 Package Information DIMENSIONS: mm 3.00 BSC. 0.48 typ 0.20 dia 0.50 BSC. ODD TERMINAL SIDE MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data sheet is believed to be accurate and reliable. However no responsibility is assumed by Micrel for its use. ...