MIC4723 Micrel Semiconductor, MIC4723 Datasheet - Page 2

• Manufacturer Part Number: MIC4723
• Description: Integrated Switch Buck Regulator
• Manufacturer: Micrel Semiconductor

Ordering Information
Pin Configuration
Pin Description
Micrel, Inc.
May 2007
Pin Number
1, 12
2, 11
3, 10
EP
4
5
6
7
8
9
MIC4723YML
Part Number
Pin Name
PGOOD
PGND
SGND
BIAS
GND
VIN
SW
NC
EN
FB
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.
Voltage
Adj.
PGND
SGND
BIAS
VIN
SW
FB
12-Pin 3mm x 3mm MLF (ML)
1
2
3
4
5
6
Temperature Range
–40° to +125°C
EP
2
12
11
10
9
8
7
SW
VIN
PGND
PGOOD
EN
NC
12-Pin 3x3 MFL
Package
®
Lead Finish
Pb-Free
M9999-052307-A
MIC4723