MIC5322
Dual, High Performance 150mA
Cap ULDO
General Description Features
The MIC5322 is a tiny Dual Ultra Low-Dropout 2.3V to 5.5V input voltage range
(ULDO) linear regulator ideally suited for those
Ultra-low dropout voltage ULDO 35mV @
applications that require high Power Supply Rejection
150mA
Ratio (PSRR). It provides a bypass pin to increase
Tiny 6-pin 1.6mm x 1.6mm Thin MLF leadless
PSRR for noise sensitive portable electronics. The
package
MIC5322 integrates two high-performance; 150mA
Bypass pin for improved noise performance
ULDOs into a very compact 1.6mm x 1.6mm leadless
Thin MLF package with exceptional thermal package High PSRR >75dB on each LDO
characteristics.
Ultra low noise output - > 30Vrms
The MIC5322 is a Cap design which enables
Dual 150mA outputs
operation with very small ceramic output capacitors
Cap stable with 1F ceramic capacitor
for stability, thereby reducing required board space
Low quiescent current 150A
and component cost. The combination of extremely
Fast turn-on time 45s
low-drop-out voltage, very high power supply
rejection, very low output noise and exceptional
Thermal shutdown protection
thermal package characteristics makes it ideal for
Current Limit protection
powering RF applications, cellular phones, GPS,
imaging sensors for digital still cameras, PDAs, MP3
Applications
players and other portable applications.
Mobile phones
The MIC5322 ULDO is available in fixed-output
GPS receivers
voltages in a tiny 6-pin 1.6mm x 1.6mm leadless Thin
2
MLF package which is only 2.56mm in area, - 30%
Portable media players
less area than the SOT-23, TSOP and MLF 3x3
Digital still and video cameras
packages. Additional voltage options are available.
PDAs
For more information, contact Micrel marketing
Portable electronics
department.
Data sheets and support documentation can be found
on Micrels web site at: www.micrel.com.
Typical Application
MIC5322-x.xYMT
RF
VIN VOUT 1
Core
VOUT 2
EN
1F
GPS
BYP GND
1F 1F Module
0.01F
RF Power Supply Circuit
ULDO is a trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC5322
Ordering Information
(1) (2)
Part number Manufacturing Marking Voltage Junction Package
Part Number Temp. Range
MIC5322-2.8/1.5YMT MIC5322-MFYMT VMF 2.8V/1.5V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
MIC5322-2.8/1.8YMT MIC5322-MGYMT VMG 2.8V/1.8V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
MIC5322-2.85/2.85YMT MIC5322-NNYMT VNN 2.85V/2.85V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
MIC5322-3.0/2.8YMT MIC5322-PMYMT VPM 3.0V/2.8V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
MIC5322-3.0/2.85YMT MIC5322-PNYMT VPN 3.0V/2.85V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
MIC5322-3.0/3.0YMT MIC5322-PPYMT VPP 3.0V/3.0V 40C to +125C 6-Pin 1.6x1.6 Thin MLF
Notes:
1. Pin 1 identifier =
2. For other voltage options. Contact Micrel Marketing for details.
Pin Configuration
VIN 1 6 VOUT1
GND 2 5 VOUT2
BYP 3 4 EN
6-Pin 1.6mm x 1.6mm Thin MLF (MT)
Top View
Pin Description
Pin Number Pin Name Pin Function
Thin MLF-6
1 VIN Supply Input.
2 GND Ground
3 BYP Reference Bypass: Connect external 0.01F to GND to reduce output noise.
May be left open.
4 /EN Enable Input (both regulators): Active Low Input. Logic High = OFF; Logic Low = ON; Do
not leave floating.
5 VOUT2 Regulator Output LDO2
6 VOUT1 Regulator Output LDO1
HS Pad EPAD Exposed heatsink pad connected to ground internally.
2 M9999-051508-B
May 2008