MIC23250-AAYMT MICREL [Micrel Semiconductor], MIC23250-AAYMT Datasheet - Page 3

• Manufacturer Part Number: MIC23250-AAYMT
• Description: 4MHz Dual 400mA Synchronous Buck Regulator with HyperLight Load
• Manufacturer: MICREL [Micrel Semiconductor]

Pin Configuration
Pin Description
Micrel, Inc.
June 2010
Pin Number
(Fixed)
10
–
1
2
3
4
5
6
7
8
9
–
10-Pin 2mm x 2mm Thin MLF
AGND
PGND
SNS1
SW1
EN1
(Adjustable)
Pin Number
1
2
3
4
5
Fixed Output
(Top View)
10
11
12
1
2
3
4
5
6
7
8
9
10 SNS2
Pin Name
9
8
7
6
AGND
PGND
SNS1
SNS2
AVIN
SW1
SW2
FB1
EN1
EN2
FB2
VIN
®
EN2
AVIN
SW2
VIN
(MT)
Pin Function
Feedback VOUT1 (Input): Connect resistor divider at this node to set output
voltage. Resistors should be selected based on a nominal VFB of 0.72V.
Sense 1 (Input): Error amplifier input. Connect to feedback resistor network
to set output 1 voltage.
Enable 1 (Input): Logic low will shut down output 1. Logic high powers up
output 1. Do not leave unconnected.
Analog Ground. Must be connected externally to PGND.
Switch Node 1 (Output): Internal power MOSFET output.
Power Ground.
Supply Voltage (Power Input): Requires close bypass capacitor to PGND.
Switch Node 2 (Output): Internal power MOSFET output.
Supply Voltage (Power Input): Analog control circuitry. Connect to VIN.
Enable 2 (Input): Logic low will shut down output 2. Logic high powers up
output 2. Do not leave unconnected.
Sense 2 (Input): Error amplifier input. Connect to feedback resistor network
to set output 2 voltage.
Feedback VOUT2 (Input): Connect resistor divider at this node to set output
voltage. Resistors should be selected based on a nominal VFB of 0.72V.
3
12-Pin 2.5mmx2.5mm Thin MLF
AGND
PGND
SNS1
SW1
EN1
FB1
Adjustable Output
1
2
3
4
5
6
(Top View)
12 FB2
11
10
9
8
7
SNS2
EN2
AVIN
SW2
VIN
®
M9999-061110-E
(MT)
MIC23250