MIC2224 Datasheet, PDF (2/13 Pages) Micrel Semiconductor – High Efficiency 2MHz PWM Buck Converter with DAC Input and 40mOHM Bypass Switch

Micrel
Ordering Information
Part Number
MIC2224YML
MIC2224
Output
Voltage⁽¹⁾
Adj.
Junction Temp. Range
–40° to +125°C
Package
3x3 MLF-10L
Lead Finish
Pb-free
Pin Configuration
SW 1
VIN 2
VIN 3
EN 4
AVIN 5
10 PGND
9 VOUT
8 VOUT
7 AGND
EP 6 DAC
3mm x 3mm MLF-10L (ML)
Pin Description
Pin
Pin Name
1
SW
2, 3
VIN
4
EN
5
AVIN
6
DAC
7
AGND
8, 9
VOUT
10
PGND
EP
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 5uA
( typ 1uA )
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. 0.5V_DAC=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.
January 2005
2
M9999-012705
www.micrel.com