MIC23153_11 Datasheet, PDF (2/18 Pages) Micrel Semiconductor – 4MHz PWM 2A Buck Regulator with HyperLight Load™ and Power Good

Micrel Inc.
MIC23153
Ordering Information
Part Number
Marking
Code
Nominal Output Voltage
Junction
Temperature Range
Package
MIC23153-GYMT
MIC23153YMT
WEG
WEA
1.8V
Adjustable
–40°C to +125°C
–40°C to +125°C
10-Pin 2.5mm x 2.5mm Thin MLF^®
10-Pin 2.5mm x 2.5mm Thin MLF^®
Notes:
1. Other options available (1V - 3.3V). Contact Micrel Marketing for details.
2. Thin MLF^® is GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
3. Thin MLF^® ▲ = Pin 1 identifier.
Pin Configuration
2.5mm x 2.5mm Thin MLF^® (MT)
Fixed Output Voltage
(Top View)
2.5mm x 2.5mm Thin MLF^® (MT)
Adjustable Output Voltage
(Top View)
Pin Description
Pin Number
(Fixed)
1
Pin Number
(Adjustable)
1
2
2
3
3
4
-
-
4
5
5
6
6
7
7
8, 9
8, 9
10
10
Pin Name Pin Function
SW
EN
SNS
NC
FB
PG
SS
AGND
VIN
PGND
Switch (Output): Internal power MOSFET output switches.
Enable (Input): Logic high enables operation of the regulator. Logic low will shut
down the device. Do not leave floating.
Sense: Connect to V_OUT as close to output capacitor as possible to sense output
voltage.
Not Internally Connected.
Feedback: Connect a resistor divider from the output to ground to set the output
voltage.
Power Good: Open drain output for the power good indicator. Use a pull-up resistor
from this pin to a voltage source to detect a power good condition.
Soft Start: Place a capacitor from this pin to ground to program the soft start time.
Do not leave floating, 100pF minimum C_SS is required.
Analog Ground: Connect to central ground point where all high current paths meet
(C_IN, C_OUT, PGND) for best operation.
Input Voltage: Connect a capacitor to ground to decouple the noise.
Power Ground.
September 2011
2
M9999-092211-B