MIC2224_06 Datasheet, PDF (2/13 Pages) Micrel Semiconductor – High Efficiency 2MHz PWM Buck Converter with DAC Input and 40mΩ Bypass Switch

Micrel, Inc.
Ordering Information⁽¹⁾
Part Number
MIC2224YML
Output
Voltage
Adj.
Junction
Temp. Range
–40°C to +125°C
Package
10-Pin 3mm x 3mm MLF^®
Lead Finish
Pb-Free
MIC2224
Pin Configuration
SW 1
VIN 2
VIN 3
EN 4
AVIN 5
10 PGND
9 VOUT
8 VOUT
7 AGND
EP 6 DAC
10-Pin MLF^® (ML)
Pin Description
Pin Number
1
2, 3
4
5
6
7
8, 9
10
EP
Pin Name
SW
VIN
EN
AVIN
DAC
AGND
VOUT
PGND
Exposed Pad
Pin Function
Switch (Output): Internal power MOSFET output switches.
Supply Voltage (Input): Requires bypass capacitor to GND.
A low level EN will power down the device, reducing the quiescent current to under
5µA (typ 1µA).
Supply Voltage (Input): Requires bypass capacitor to GND.
DAC Control Input. Provides control of output voltage. The output voltage is 3 X the
DAC voltage. (Ex. 0.5VDAC = 1.5V_OUT). Bypass mode is enabled when the DAC
voltage exceeds 1.2V.
Signal Ground of chip.
Source of Internal P-Channel MOSFET and Feedback of internal PWM regulator.
Power Ground of chip.
Connect to ground.
September 2006
2
M9999-091106