MIC5203-4.0BM4 Micrel Semiconductor, MIC5203-4.0BM4 Datasheet

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MIC5203-4.0BM4

Manufacturer Part Number
MIC5203-4.0BM4
Description
Manufacturer
Micrel Semiconductor
Datasheet

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MIC5203
General Description
The MIC5203 is a µCap 80mA linear voltage regulator with
very low dropout voltage (typically 20mV at light loads and
300mV at 80mA) and very low ground current (225µA at
20mA output), offering better than 3% initial accuracy with a
logic-compatible enable input.
The µCap regulator design is optimized to work with low-value,
low-cost ceramic capacitors. The outputs typically require
only 0.47µF of output capacitance for stability.
Designed especially for hand-held, battery-powered devices,
the MIC5203 can be controlled by a CMOS or TTL compat-
ible logic signal. When disabled, power consumption drops
nearly to zero. If on-off control is not required, the enable pin
may be tied to the input for 3-terminal operation. The ground
current of the MIC5203 increases only slightly in dropout,
further prolonging battery life. Key MIC5203 features include
current limiting, overtemperature shutdown, and protection
against reversed battery.
The MIC5203 is available in 2.8V, 3.0V, 3.3V, 3.6V, 3.8V,
4.0V, 4.5V, 4.75V, and 5.0V fixed voltages. Other voltages
are available; contact Micrel for details.
Typical Applications
February 2006
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Shutdow n
Enable
SOT-143 Version
L A x x
0.47µF
V
OUT
1
Features
• Tiny 4-lead and 5-lead surface-mount packages
• Wide Selection of output voltages
• Guaranteed 80mA output
• Low quiescent current
• Low dropout voltage
• Tight load and line regulation
• Low temperature coefficient
• Current and thermal limiting
• Reversed input polarity protection
• Zero off-mode current
• Logic-controlled shutdown
• Stability with low-ESR ceramic capacitors
Applications
• Cellular telephones
• Laptop, notebook, and palmtop computers
• Battery-powered equipment
• Bar code scanners
• SMPS post-regulator/dc-to-dc modules
• High-efficiency linear power supplies
Shutdown
Enable
µCap 80mA Low-Dropout Regulator
SOT-23-5 Version
MIC5203
1
2
3
5
4
0.47µF
Micrel, Inc.
V
MIC5203
OUT

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MIC5203-4.0BM4 Summary of contents

Page 1

... The outputs typically require only 0.47µF of output capacitance for stability. Designed especially for hand-held, battery-powered devices, the MIC5203 can be controlled by a CMOS or TTL compat- ible logic signal. When disabled, power consumption drops nearly to zero. If on-off control is not required, the enable pin may be tied to the input for 3-terminal operation ...

Page 2

... MIC5203-3.0BM4 LA30 MIC5203-3.0YM4 MIC5203-3.3BM4 LA33 MIC5203-3.3YM4 MIC5203-3.6BM4 LA36 MIC5203-3.6YM4 MIC5203-3.8BM4 LA38 MIC5203-3.8YM4 MIC5203-4.0BM4 LA40 MIC5203-4.0YM4 MIC5203-4.5BM4 LA45 MIC5203-4.5YM4 MIC5203-4.7BM4 LA47 MIC5203-4.7YM4 MIC5203-5.0BM4 LA50 MIC5203-5.0YM4 MIC5203-2.6BM5 LK26 MIC5203-2 ...

Page 3

... Exceeding the maximum allowable D(max) J(max 250°C/W for the SOT-143 JA Micrel, Inc. IN Max Units 200 pm/°C 0.3 % 0.5 % 0 350 mV mV 600 mV 10 µA µA 750 µA µA 3000 µA 300 µA 250 mA %/W 0.6 µA µA 1 µA 50 µA MIC5203 ...

Page 4

... Temperature 4 10µ 1µF OUT 3.6 3.4 3.2 3 DEVICES 3 AVG / LO 2.8 CURVES APPLICABLE 2.6 AT 100µA AND 50mA 2.4 -60 - 120 150 TEMPERATURE ( °C) MIC5203 Dropout Voltage vs. Temperature 400 C = 10µ 1µF OUT 300 I = 80mA L 200 I = 100µA L 100 I = 1mA L 0 -60 - 120 150 TEMPERATURE ( ° ...

Page 5

... OUT 0 FREQUENCY (Hz) Enable Characteristics (3.3V Version 1µ 100µ -0.2 0.0 0.2 0.4 0.6 0.8 1.0 TIME (ms) Enable Current vs. Temperature 10µ 1µF OUT 1mA -60 - 120 150 TEMPERATURE ( °C) MIC5203 ...

Page 6

... Tantalum or ceramic capacitors are recommended for operation below –25C°. No-Load Stability The MIC5203 will remain stable and in regulation with no load (other than the internal voltage divider) unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. ...

Page 7

... C L DIMENSIONS: MM (INCH) 1.12 (0.044) 0.81 (0.032) 8° 0° 0.10 (0.004) 0.013 (0.0005) SOT-143 (M4 (408) 474-1000 FAX WEB Micrel for any damages resulting from such use or sale. © 1998 Micrel, Inc. 7 0.150 (0.0059) 0.089 (0.0035) 0.41 (0.016) 0.13 (0.005) http://www.micrel.com Micrel, Inc. MIC5203 ...

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