MIC5236-3.0BM Micrel Inc, MIC5236-3.0BM Datasheet

IC REG LDO 150MA 3.0V 8-SOIC

MIC5236-3.0BM

Manufacturer Part Number
MIC5236-3.0BM
Description
IC REG LDO 150MA 3.0V 8-SOIC
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC5236-3.0BM

Regulator Topology
Positive Fixed
Voltage - Output
3V
Voltage - Input
Up to 30V
Voltage - Dropout (typical)
0.3V @ 150mA
Number Of Regulators
1
Current - Output
150mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MIC5236-3.0BM
Manufacturer:
MICREL
Quantity:
11 856
General Description
The MIC5236 is a low quiescent current, µCap low-dropout
regulator. With a maximum operating input voltage of 30V and
a quiescent current of 20µA, it is ideal for supplying keep-alive
power in systems with high-voltage batteries.
Capable of 150mA output, the MIC5236 has a dropout volt-
age of only 300mV. It can also survive an input transient of
–20V to +60V.
As a µCap LDO, the MIC5236 is stable with either a ceramic
or a tantalum output capacitor. It only requires a 1.0µF output
capacitor for stability.
The MIC5236 includes a logic compatible enable input and
an undervoltage error flag indicator. Other features of the
MIC5236 include thermal shutdown, current-limit, overvoltage
shutdown, load-dump protection, reverse leakage protections,
and reverse battery protection.
Available in the thermally enhanced SOIC-8 and MSOP-8, the
MIC5236 comes in fixed 2.5V, 3.0V, 3.3V, 5.0V, and adjustable
voltages. For other output voltages, contact Micrel.
Typical Application
July 2005
MIC5236
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
30V
V
IN
Regulator with Low I
IN
EN
MIC5236
GND
OUT
ERR
O
V
and Low I
5V
IN
V
3.0V/100µA
I
GND
OUT
Regulator with Adjustable Output
= 20µA
Q
IN
EN
MIC5236
GND
OUT
ADJ
1
Features
• Ultra-low quiescent current (I
• Wide input range: 2.3V to 30V
• Low dropout:
• Fixed 2.5V, 3.0V, 3.3V, 5.0V, and Adjustable outputs
• ±1.0% initial output accuracy
• Stable with ceramic or tantalum output capacitor
• Load dump protection: –20V to +60V input transient
• Logic compatible enable input
• Low output flag indicator
• Overcurrent protection
• Thermal shutdown
• Reverse-leakage protection
• Reverse-battery protection
• High-power SOIC-8 and MSOP-8
Applications
• Keep-alive supply in notebook and
• Logic supply from high-voltage batteries
• Automotive electronics
• Battery-powered systems
Low Quiescent Current µCap LDO Regulator
R1
R2
survivability
portable personal computers
V
5V
230mV @50mA;
300mV @150mA
IN
V
3.0V/150mA
OUT
Regulator with Error Output
IN
EN
MIC5236
GND
MIC5236
OUT
ERR
Q
47k
= 20µA @I
C
OUT
V
3.0V/150mA
V
O
OUT
ERR
= 100µA)
Micrel, Inc.
MIC5236

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MIC5236-3.0BM Summary of contents

Page 1

... Capable of 150mA output, the MIC5236 has a dropout volt- age of only 300mV. It can also survive an input transient of –20V to +60V µCap LDO, the MIC5236 is stable with either a ceramic or a tantalum output capacitor. It only requires a 1.0µF output capacitor for stability. The MIC5236 includes a logic compatible enable input and an undervoltage error fl ...

Page 2

... MIC5236 Ordering Information Part Number* Standard Pb-Free MIC5236BM MIC5236YM MIC5236BMM MIC5236YMM MIC5236-2.5BM MIC5236-2.5YM MIC5236-2.5BMM MIC5236-2.5YMM MIC5236-3.0BM MIC5236-3.0YM MIC5236-3.0BMM MIC5236-3.0YMM MIC5236-3.3BM MIC5236-3.3YM MIC5236-3.3BMM MIC5236-3.3YMM MIC5236-5.0BM MIC5236-5.0YM MIC5236-5.0BMM MIC5236-5.0YMM * Contact factory regarding availability for voltages not listed Pin Configuration ERR OUT 3 EN ...

Page 3

... 200µA 150 OUT OL 0.1 2.0 Micrel, Inc. 80°C/W Max Units 0.5 % 1.0 % 0.3 % 0.5 % 0.6 % 1.0 % 100 mV 400 mV mV 500 mV 30 µA 0 4 µA 350 mA µVrms % 98 % 250 mV 400 mV 1 µA 2 µA 0 MIC5236 ...

Page 4

... The maximum allowable power dissipation of any T able power dissipation will result in excessive die termperature, and the regulator will go into thermal shutdown. The θ xBM (all versions) is 63°C/W, and the MIC5236-x.xBMM (all versions) is 80°C/W, mounted board (see “Thermal Characteristics” for further details). ...

Page 5

... IN 3.000 I = 150mA LOAD 2.995 2.990 2.985 -40 - 100 120 TEMPERATURE (°C) 5 Micrel, Inc. Dropout Voltage vs. Temperature 600 500 400 I = 150mA LOAD 300 200 100 MIC5236-3.0 0 -40 - 100 120 TEMPERATURE (°C) Ground Current vs. Supply Voltage 5 MIC5236-3 150mA LOAD OUT 100µA LOAD ...

Page 6

... EXTERNAL VOLTAGE (V) Note 10 MIC5236 Reverse Current OUT IN EN GND MIC5236 Overvoltage Threshold vs. Temperature 41 MIC5236-3 -40 - 100 120 TEMPERATURE (°C) Dropout Induced Error Flag 3.0 MIC5236-3.0 2 2.7V IN 2.0 V =2.62V OUT No Load 1.5 1.0 0 0.5 1.0 1.5 2.0 SINK CURRENT (mA) Reverse Current (Grounded Input Note 11 50 -40° ...

Page 7

... MIC5236 Functional Characteristics Enable Transient Response TIME (250µs/div.) July 2005 10mA L 7 Micrel, Inc. Load Transient Response OUT C = 15µF OUT ESR = 200mΩ TIME (250µs/div.) MIC5236 ...

Page 8

... MIC5236 Functional Diagram MIC5236 IN EN Error Amplifier Error V REF Comparator 1.23V MIC5236-x.x GND 8 OUT R FB1 R FB2 R FB3 ERR Micrel, Inc. July 2005 ...

Page 9

... OUT Reverse Current Protection The MIC5236 is designed to limit the reverse current flow from output to input in the event that the MIC5236 output has been tied to the output of another power supply. See the graphs detailing the reverse current flow with the input grounded and open. ...

Page 10

... Power SOIC-8 Thermal Characteristics One of the secrets of the MIC5236’s performance is its power SO-8 package featuring half the thermal resistance of a standard SO-8 package. Lower thermal resistance means more output current or higher input voltage for a given pack- age size ...

Page 11

... Figure 9 shows that the required area of copper 2 is 110mm ,when using the power MSOP-8. Adjustable Regulator Application ) Figure 10. Adjustable Voltage Application The MIC5236BM/MM can be adjusted from 1.24V to 20V by using two external resistors (Figure 10). The resistors set the output voltage based on the following equation OUT REF Where V REF 11 ...

Page 12

... A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify MIC5236 MAX) ...

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