MIC4723 Datasheet, PDF (2/19 Pages) Micrel Semiconductor – 3A 2MHz Integrated Switch Buck Regulator

Micrel, Inc.
Ordering Information
Part Number
MIC4723YML
Voltage
Adj.
Temperature Range
–40° to +125°C
Package
12-Pin 3x3 MFL^®
MIC4723
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 NC
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
NC
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 (Analog) 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.
No Connect. Not internally connected to die. This pin can be tied to any other pin if desired.
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 2007
2
M9999-052307-A