MIC23155_12 Datasheet, PDF (2/19 Pages) Micrel Semiconductor – 3MHz PWM 2A Buck Regulator with HyperLight Load® and Power Good

Micrel Inc.
MIC23155
Ordering Information
Part Number
Marking Code Nominal Output Voltage
Junction
Temperature
Range
Package
MIC23155-GYMT
QLG
1.8V
–40°C to +125°C
10-Pin 2.5mm x 2.5mm Thin DFN
MIC23155YMT
QLA
Adjustable
–40°C to +125°C
10-Pin 2.5mm x 2.5mm Thin DFN
Notes:
1. Other fixed output voltage options available. Contact Micrel Marketing for details.
2. Thin DFN is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
3. Thin DFN ▲ = Pin 1 identifier.
Pin Configuration
2.5mm x 2.5mm Thin DFN (MT)
Fixed Output Voltage
(Top View)
2.5mm x 2.5mm Thin DFN (MT)
Adjustable Output Voltage
(Top View)
Pin Description
Pin Number
(Fixed)
1
2
Pin Number
(Adjustable)
1
2
3
4
−
5
6
7
8,9
10
ePAD
3
−
4
5
6
7
8,9
10
ePAD
Pin Name
SW
EN
SNS
NC
FB
PG
SS
AGND
VIN
PGND
ePAD
Pin Function
Output Switch Node
Enable: Logic high enables operation of the regulator. Logic low will shut
down the device. Do not leave floating.
Output Voltage Sensing Pin. When disabled, provides output discharge.
Not internally connected.
Feedback connection for output voltage sensing.
Power Good Indicator. Open drain output.
Programmable Soft-Start Pin. Do not leave floating.
Analog Ground. Ground path for bias and control circuitry.
Input Voltage Supply.
Power Ground. Ground path for high current circuitry.
Exposed heat sink pad. Connect to PGND.
November 2012
2
M9999-110812-A