MIC5233-2.5BM5 Micrel Semiconductor, MIC5233-2.5BM5 Datasheet

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MIC5233-2.5BM5

Manufacturer Part Number
MIC5233-2.5BM5
Description
High Input Voltage/ Low IQ Cap LDO Regulator
Manufacturer
Micrel Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC5233-2.5BM5
Manufacturer:
MICREL
Quantity:
446
Part Number:
MIC5233-2.5BM5
Manufacturer:
MICREL/麦瑞
Quantity:
20 000
General Description
The MIC5233 is a 100mA highly accurate, low dropout
regulator with high input voltage and ultra-low ground current.
This combination of high voltage and low ground current
makes the MIC5233 ideal for multi-cell Li-Ion battery
systems.
A
ceramic or tantalum output capacitor. It only requires a 2.2 F
capacitor for stability.
Features of the MIC5233 include enable input, thermal shut-
down, current limit, reverse battery protection, and
reverse leakage protection.
Available in fixed and adjustable output voltage versions, the
MIC5233 is offered in the IttyBitty™ SOT-23-5 package with
a junction temperature range of –40 C to +125 C.
Typical Application
IttyBitty is a trademark of Micrel, Inc.
August 2003
MIC5233
Ultra-Low Current Adjustable Regulator Application
Cap LDO design, the MIC5233 is stable with either
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
C
IN
=1.0 F
OFF ON
V
IN
EN
MIC5233BM5
1
2
3
4
5
R
R
1
2
Ordering Information
Part Number
MIC5233-1.8BM5
MIC5233-2.5BM5
MIC5233-3.0BM5
MIC5233-3.3BM5
MIC5233-5.0BM5
MIC5233BM5
V
C
ceramic
I
GND
OUT
OUT
=18 A
=2.2 F
Marking
1
L3AA
L318
L325
L330
L333
L350
Features
• Wide input voltage range: 2.3V to 36V
• Ultra low ground current: 18 A
• Low dropout voltage of 270mV at 100mA
• High output accuracy of 2.0% over temperature
• Excellent line and load regulation specifications
• Zero shutdown current
• Reverse battery protection
• Reverse leakage protection
• Thermal shutdown and current limit protection
• IttyBitty™ SOT-23-5 package
Applications
• Keep-alive supply in notebook and portable computers
• USB power supply
• Logic supply for high-voltage batteries
• Automotive electronics
• Battery powered systems
• 3-4 cell Li-Ion battery input range
High Input Voltage, Low IQ Cap LDO Regulator
Cap: stable with ceramic or tantalum capacitors
Voltage
ADJ.
1.8V
2.5V
3.0V
3.3V
5.0V
Ground Current vs. Input Voltage
40
35
30
25
20
15
10
Junction Temp. Range
4
I
OUT
MIC5233
8 12 16 20 24 28 32 36 40
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
–40 C to +125 C
I
OUT
INPUT VOLTAGE (V)
= 1mA
= 10 A
I
OUT
= 100 A
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Package
MIC5233
Micrel

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MIC5233-2.5BM5 Summary of contents

Page 1

... Logic supply for high-voltage batteries • Automotive electronics • Battery powered systems • 3-4 cell Li-Ion battery input range Ordering Information Part Number Marking MIC5233-1.8BM5 L318 MIC5233-2.5BM5 L325 MIC5233-3.0BM5 L330 MIC5233-3.3BM5 L333 MIC5233-5.0BM5 L350 MIC5233BM5 L3AA ...

Page 2

... MIC5233 Pin Configuration Pin Description SOT-23-5 Pin Name GND (fixed) ADJ (ADJ.) 5 OUT MIC5233 EN GND L3xx OUT ADJ. SOT-23-5 Pin Function Supply Input. Ground. Enable (Input): Logic low = shutdown; logic high = enable No Connect. Adjust (Input): Feedback input. Connect to resistive voltage-divider network. ...

Page 3

... C to +125 .................................................. 235 C/W JA < +125 C; unless otherwise specified. J Min Typ Max –1.0 +1.0 –2.0 +2.0 0.04 0.5 0. 230 300 400 270 400 450 0.35 0. 0.1 1 190 350 –0.1 0.6 2.0 –1.0 0.01 1.0 0.1 1.0 0.5 2.5 Micrel Units % % % % MIC5233 ...

Page 4

... OUT 1mA 50 OUT I = 100 A OUT OUT 0 1.5 2 2.5 3 3.5 4 INPUT VOLTAGE (V) MIC5233 Dropout Voltage vs. Output Current 350 300 250 200 150 100 100 OUTPUT CURRENT (mA) Ground Pin Current vs. Output Current 1000 900 IN 800 ...

Page 5

... TEMPERATURE ( C) Load Transient Response 100mA 0mA OUT C = 4.7 F ceramic OUT TIME (400 s/div.) 5 Micrel Short Circuit Current vs. Temperature 300 250 200 150 100 -40 - 100 120 TEMPERATURE ( C) MIC5233 ...

Page 6

... MIC5233 Functional Diagrams MIC5233 ENABLE V REF GND Block Diagram – Fixed Output Voltage ENABLE V REF GND Block Diagram – Adjustable Output Voltage 6 OUT R1 R2 OUT R1 ADJ R2 August 2003 Micrel ...

Page 7

... Forcing the enable pin high enables the output voltage. Input Capacitor The MIC5233 has high input voltage capability up to 36V. The input capacitor must be rated to sustain voltages that may be used on the input. An input capacitor may be required when the device is not near the source power supply or when supplied by a battery ...

Page 8

... MIC5233 Adjustable Regulator Application The MIC5233BM5 can be adjusted from 1.24V to 20V by using two external resistors (Figure 1). The resistors set the output voltage based on the following equation OUT REF R 2 Where V = 1.24V. REF Feedback resistor R2 should be no larger than 300k . ...

Page 9

... Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify August 2003 1.75 (0.069) 3.00 (0.118) 1.50 (0.059) 2.60 (0.102) 1.30 (0.051) 0.90 (0.035 0.15 (0.006) 0.00 (0.000) SOT-23-5 (M5 (408) 944-0970 FAX WEB Micrel for any damages resulting from such use or sale. © 2003 Micrel, Incorporated. 9 DIMENSIONS: MM (INCH) 0.20 (0.008) 0.09 (0.004) 0.60 (0.024) 0.10 (0.004) http://www.micrel.com Micrel MIC5233 ...

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