MIC4723_08 Datasheet, PDF (2/20 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 MLF^®
MIC4723YMME
Adj.
–40° to +125°C
10-Pin ePAD MSOP
Note
MLF^® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
MIC4723
Lead Finish
Pb-Free
Pb-Free
Pin Configuration
SW 1
VIN 2
PGND 3
SGND 4
BIAS 5
FB 6
12 SW
11 VIN
10 NC
9 PGOOD
8 EN
EP
7 NC
12-Pin 3mm x 3mm MLF (ML)
SW 1
VIN 2
SGND 3
BIAS 4
FB 5
10 SW
9 VIN
8 PGND
7 PGOOD
EP
6 EN
10-Pin ePAD MSOP (MME)
Pin Description
Pin Number
MLF-12
1, 12
2, 11
Pin Number
MSOP-10
1, 10
2, 9
3
8
4
3
5
4
6
5
7, 10
—
8
6
9
7
EP
EP
Pin Name Pin Function
SW
VIN
PGND
SGND
BIAS
FB
NC
EN
PGOOD
GND
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.
June 2008
2
M9999-060308-E