MIC33050 Datasheet, PDF (2/13 Pages) Micrel Semiconductor – 4MHz Internal Inductor PWM Buck Regulator with HyperLight Load™

Micrel, Inc.
Ordering Information
Part Number
Voltage
Temperature Range
MIC33050-4YHL
1.2V
–40° to +125°C
MIC33050-GYHL
1.8V
–40° to +125°C
Note:
1. Other voltage options available. Contact Micrel for details.
Package
12-Pin 3mm x 3mm MLF^®
12-Pin 3mm x 3mm MLF^®
MIC33050
Lead Finish
Pb-Free
Pb-Free
Pin Configuration
12-Pin 3mm x 3mm MLF^® (ML)
Pin Description
Pin Number
1
9
10
11
2
12
3,4,5,6
7,8
Pin Name
VIN
EN
SNS
CFF
PGND
AGND
SW
OUT
Pin Function
Supply Voltage (Input): Requires bypass capacitor-to-GND.
Enable (Input): Logic low will shut down the device, reducing the quiescent
current to less than 4µA.
Input to the error amplifier, connect to the external resistor divider network to set
the output voltage. For fixed output voltages connect to V_OUT and an internal
resistor network sets the output voltage.
Feed forward Capacitor connected to Out sense pin
Power Ground
Analog ground
Switch (Output): Internal power MOSFET output switches.
Output after the internal inductor
October 2007
2
M9999-100407-A