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MIC5305_07 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 150mA μCap Ultra-Low Dropout LDO Regulator | |||
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MIC5305
150mA µCap Ultra-Low Dropout
LDO Regulator
General Description
The MIC5305 is a high-performance, 150mA LDO regula-
tor, offering extremely high PSRR and very low noise while
consuming low ground current.
Ideal for battery-operated applications, the MIC5305
features 1% accuracy, extremely low-dropout voltage
(60mV @ 150mA), and low ground current at light load
(typically 90µA). Equipped with a logic-compatible enable
pin, the MIC5305 can be put into a zero-off-mode current
state, drawing no current when disabled.
The MIC5305 is a µCap design operating with very small
ceramic output capacitors for stability, thereby reducing
required board space and component cost.
The MIC5305 is available in ï¬xed output voltages and
adjustable output voltages in the super-compact 6-pin
2mm à 2mm MLF® leadless package, our new ultra-thin
6-pin 2mm à 2mm Thin MLF® and thin SOT-23-5 package.
Additional voltage options are available. Contact Micrel
marketing.
Data sheets and support documentation can be found on
Micrelâs web site at www.micrel.com.
Features
⢠Ultra-low dropout voltage of 60mV @ 150mA
⢠Input voltage range: 2.25 to 5.5V
⢠Stable with ceramic output capacitor
⢠150mA guaranteed output current
⢠Low output noise â 20µVrms
⢠Low quiescent current of 90µA total
⢠High PSRR, up to 85dB @1kHz
⢠Less than 30µs turn-on time w/CBYP = 0.01µF
⢠High output accuracy:
â ±1.0% initial accuracy
â ±2.0% over temperature
⢠Thermal shutdown protection
⢠Current limit protection
⢠Tiny 6-pin 2mm à 2mm MLF® package
⢠Ultra-Thin 6-pin 2mm à 2mm Thin MLF® package
⢠Thin SOT-23-5 package
Applications
⢠Cellular phones
⢠PDAs
⢠Fiber optic modules
⢠Portable electronics
⢠Notebook PCs
⢠Audio Codec power supplies
Typical Application
3.0V
VIN
1µF
MIC5305
VIN VOUT
EN BYP
GND
0.1µF
2.85V@150mA
VOUT
1µF
Dropout Voltage
70
60
50
40
30
20
10
0
0 20 40 60 80 100 120 140
OUTPUT CURRENT (mA)
PSRR
(Bypass Pin Cap = 0.1µF)
100
90
150mA
80
70
60
50mA
50
40
100µA
30
20
10
0
0.1
1
10 100 1k
FREQUENCY (kHz)
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 ⢠http://www.micrel.com
June 2007
1
M9999-062507
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