MIC2208_10 Datasheet, PDF (2/18 Pages) Micrel Semiconductor – 3mm x 3mm 1MHz 3A PWM Buck Regulator

Micrel, Inc.
MIC2208
Ordering Information
Part Number
MIC2208YML
Voltage
Adj.
Temperature Range
–40° to +125°C
Package
12-Pin 3x3 MLF^®
Note:
MLF^® is GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Lead Finish
Pb-Free
Pin Configuration
SW 1
VIN 2
PGND 3
SGND 4
BIAS 5
FB 6
12 SW
11 VIN
10 PGND
9 PGOOD
8 EN
EP
7 COMP
12-Pin 3mm x 3mm MLF^® (ML)
Pin Description
Pin Number
1, 12
2, 11
3, 10
4
5
6
7
8
9
EP
Pin Name
SW
VIN
PGND
SGND
BIAS
FB
COMP
EN
PGOOD
GND
Pin Function
Switch (Output): Internal power P-Channel MOSFET output switch.
Supply Voltage (Input): Supply voltage for the source of the internal P-channel
MOSFET and driver. Requires bypass capacitor to GND
Power Ground. Provides the ground return path for the high-side drive current.
Signal Ground. Provides return path for control circuitry and internal reference.
Internal circuit bias supply. Must be bypassed with a 0.1µF ceramic capacitor to
SGND.
Feedback. Input to the error amplifier, connect to the external resistor divider
network to set the output voltage.
Compensation. This is the internal error amplifier output. Connect external
compensation components for type II or type III compensation.
Enable (Input). Logic level low will shutdown the device, reducing the current
draw to less than 5µA.
Power Good. Open drain output that is pulled to ground when the output voltage
is within ±7.5% of the set regulation voltage
Connect to ground.
May 2010
2
M9999-051410-D