MIC5205BM5. IC5205BM5 Datasheet

IC5205BM5 Datasheet PDF


Part

IC5205BM5

Description

MIC5205BM5

Manufacture

Micrel Semiconductor

Page 12 Pages
Datasheet
Download IC5205BM5 Datasheet


IC5205BM5 Datasheet
MIC5205
www.DataSheet4U.com
Micrel
MIC5205
150mA Low-Noise LDO Regulator
General Description
The MIC5205 is an efficient linear voltage regulator with ultra-
low-noise output, very low dropout voltage (typically 17mV at
light loads and 165mV at 150mA), and very low ground
current (600µA at 100mA output). The MIC5205 offers better
than 1% initial accuracy.
Designed especially for hand-held, battery-powered devices,
the MIC5205 includes a CMOS or TTL compatible enable/
shutdown control input. When shutdown, power consump-
tion drops nearly to zero. Regulator ground current increases
only slightly in dropout, further prolonging battery life.
Key MIC5205 features include a reference bypass pin to
improve its already excellent low-noise performance, re-
versed-battery protection, current limiting, and
overtemperature shutdown.
The MIC5205 is available in fixed and adjustable output
voltage versions in a small SOT-23-5 package.
For low-dropout regulators that are stable with ceramic
output capacitors, see the µCap MIC5245/6/7 family.
Features
Ultra-low-noise output
High output voltage accuracy
Guaranteed 150mA output
Low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Current and thermal limiting
Reverse-battery protection
• “Zerooff-mode current
Logic-controlled electronic enable
Applications
Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
PCMCIA VCC and VPP regulation/switching
Consumer/personal electronics
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
Ordering Information
Part Number
Marking Voltage Accuracy Junction Temp. Range*
MIC5205BM5
LBAA
Adj
1%
–40°C to +125°C
MIC5205-2.5BM5
MIC5205-2.7BM5
MIC5205-2.8BM5
MIC5205-2.85BM5
LB25
LB27
LB28
LB2J
2.5V
2.7V
2.8V
2.85V
1%
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5205-2.9BM5
MIC5205-3.0BM5
MIC5205-3.3BM5
LB29
LB30
LB33
2.9V
3.0V
3.3V
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
MIC5205-3.6BM5
MIC5205-3.8BM5
MIC5205-4.0BM5
MIC5205-5.0BM5
LB36
LB38
LB40
LB50
3.6V
3.8V
4.0V
5.0V
1%
1%
1%
1%
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Other voltages available. Contact Micrel for details.
Typical Application
VIN
MIC5205-x.xBM5
15
VOUT
Enable
Shutdown
EN
EN (pin 3) may be
connected directly
to IN (pin 1).
2
3
COUT = 2.2µF
4 tantalum
CBYP
Low-Noise Operation:
CBYP = 470pF, COUT 2.2µF
Basic Operation:
CBYP = not used, COUT 1µF
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Ultra-Low-Noise Regulator Application
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
June 2000
1
MIC5205

IC5205BM5 Datasheet
MIC5205
www.DataSheet4U.com
Pin Configuration
EN GND IN
321
LBxx
4
BYP
5
OUT
MIC5205-x.xBM5
Fixed Voltages
EN GND IN
3 21
LBAA
Part
Identification
4
ADJ
5
OUT
MIC5205BM5
Adjustable Voltage
Micrel
Pin Description
MIC5205-x.x
(fixed)
1
2
3
MIC5205
(adjustable)
1
2
3
4
4
55
Pin Name
IN
GND
EN
BYP
ADJ
OUT
Pin Function
Supply Input
Ground
Enable/Shutdown (Input): CMOS compatible input. Logic high = enable,
logic low or open = shutdown.
Reference Bypass: Connect external 470pF capacitor to GND to reduce
output noise. May be left open.
Adjust (Input): Adjustable regulator feedback input. Connect to resistor
voltage divider.
Regulator Output
Absolute Maximum Ratings (Note 1)
Supply Input Voltage (VIN) ............................ 20V to +20V
Enable Input Voltage (VEN) ........................... 20V to +20V
Power Dissipation (PD) ............... Internally Limited, Note 3
Lead Temperature (soldering, 5 sec.) ....................... 260°C
Junction Temperature (TJ) ....................... 40°C to +125°C
Storage Temperature (TS) ....................... 65°C to +150°C
Operating Ratings (Note 2)
Input Voltage (VIN) ....................................... +2.5V to +16V
Enable Input Voltage (VEN) .................................. 0V to VIN
Junction Temperature (TJ) ....................... 40°C to +125°C
Thermal Resistance, SOT-23-5 JA) ....................... Note 3
MIC5205
2 June 2000


Features Datasheet pdf MIC5205 www.DataSheet4U.com Micrel MIC 5205 150mA Low-Noise LDO Regulator Gen eral Description The MIC5205 is an effi cient linear voltage regulator with ult ralow-noise output, very low dropout vo ltage (typically 17mV at light loads an d 165mV at 150mA), and very low ground current (600µA at 100mA output). The M IC5205 offers better than 1% initial ac curacy. Designed especially for hand-he ld, battery-powered devices, the MIC520 5 includes a CMOS or TTL compatible ena ble/ shutdown control input. When shutd own, power consumption drops nearly to zero. Regulator ground current increase s only slightly in dropout, further pro longing battery life. Key MIC5205 featu res include a reference bypass pin to i mprove its already excellent low-noise performance, reversed-battery protectio n, current limiting, and overtemperatur e shutdown. The MIC5205 is available in fixed and adjustable output voltage ve rsions in a small SOT-23-5 package. Fe atures • • • • • • • • • • • • • • • • • • Ultra-low-noise outpu.
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