MIC5239BM TR Micrel Inc, MIC5239BM TR Datasheet

IC REG LDO 500MA ADJ 8-SOIC

MIC5239BM TR

Manufacturer Part Number
MIC5239BM TR
Description
IC REG LDO 500MA ADJ 8-SOIC
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC5239BM TR

Regulator Topology
Positive Adjustable
Voltage - Output
1.24 ~ 20 V
Voltage - Input
2.3 ~ 30 V
Voltage - Dropout (typical)
0.35V @ 500mA
Number Of Regulators
1
Current - Output
500mA
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)
-
Other names
MIC5239BMTR
MIC5239BMTR
General Description
The MIC5239 is a low quiescent current, µCap low-dropout
regulator. With a maximum operating input voltage of 30V
and a quiescent current of 23µA, it is ideal for supplying
keep-alive power in systems with high voltage batteries.
Capable of 500mA output, the MIC5239 has a dropout
voltage of only 350mV. It can provide high output current
for applications such as USB.
As a µCap LDO, the MIC5239 is stable with either a
ceramic or a tantalum output capacitor. It only requires a
3.3µF output capacitor for stability.
The MIC5239 includes a logic compatible enable input and
an undervoltage error flag indicator. Other features of the
MIC5239 include thermal shutdown, current limit, overvolt-
age shutdown, reverse-leakage protection, and reverse-
battery protection.
Available in the thermally enhanced SOIC-8, MSOP-8 and
SOT-223, the MIC5239 comes in fixed 1.5V, 1.8V, 2.5V,
3.0V, 3.3V and 5.0V, and adjustable voltages. For other
output voltages, contact Micrel.
All support documentation can be found on Micrel’s web
site at: www.micrel.com.
___________________________________________________________________________________________________________
Typical Application
MLF and MicroLeadFrame is a registered trademark of Amkor Technologies
December 2007
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
30V
V
Regulator with Low I
IN
IN
EN
MIC5239
GND
OUT
FLG
O
and Low I
Q
V
3.0V/100µA
I
GND
OUT
= 23µA
Features
• Ultra-low quiescent current (I
• Continuous 500mA output current
• Wide input range: 2.3V to 30V
• Low dropout voltage: 350mV @500mA
• ±1.0% initial output accuracy
• Stable with ceramic or tantalum output capacitor
• Logic compatible enable input
• Low output voltage error flag indicator
• Overcurrent protection
• Thermal shutdown
• Reverse-leakage protection
• Reverse-battery protection
• High-power SOIC-8, MSOP-8 and SOT-223 packages
Applications
• USB power supply
• Keep-alive supply in notebook and portable personal
• Logic supply from high voltage batteries
• Automotive electronics
• Battery-powered systems
408
computers
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
Low Quiescent Current 500mA µCap
Ground Current vs. Input Voltage
40
35
30
25
20
15
10
LDO Regulator
4
MIC5239
I
OUT
I
OUT
9
= 1mA
= 10µA
14
Q
I
19
OUT
= 23µA @I
= 100µA
24
29
M9999-121007
O
= 100µA)

Related parts for MIC5239BM TR

MIC5239BM TR Summary of contents

Page 1

... FLG GND Regulator with Low I O MLF and MicroLeadFrame is a registered trademark of Amkor Technologies Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( December 2007 Features • Ultra-low quiescent current (I • Continuous 500mA output current • Wide input range: 2.3V to 30V • ...

Page 2

Micrel Ordering Information Part Number Standard Pb-Free MIC5239-1.5BM MIC5239-1.5YM MIC5239-1.5BMM MIC5239-1.5YMM MIC5239-1.5BS MIC5239-1.5YS MIC5239-1.8BM MIC5239-1.8YM MIC5239-1.8BMM MIC5239-1.8YMM MIC5239-1.8BS MIC5239-1.8YS MIC5239-2.5BM MIC5239-2.5YM MIC5239-2.5BMM MIC5239-2.5YMM MIC5239-2.5BS MIC5239-2.5YS MIC5239-3.0BM MIC5239-3.0YM MIC5239-3.0BMM MIC5239-3.0YMM MIC5239-3.0BS MIC5239-3.0YS MIC5239-3.3BM MIC5239-3.3YM MIC5239-3.3BMM MIC5239-3.3YMM MIC5239-3.3BS MIC5239-3.3YS MIC5239-5.0BM MIC5239-5.0YM MIC5239-5.0BMM ...

Page 3

Micrel Pin Configuration SOIC-8 (M) MSOP-8(MM) (Fixed) Pin Description Pin Number Pin Number MSOP/SOIC SOT-223 2 (fixed) — 2 (adj) — — 5–8 2 December 2007 SOT-223 (S) Pin Name Pin Function FLG Error FLAG ...

Page 4

Micrel Absolute Maximum Ratings Supply Voltage (V ) ...................................... –20V to +32V IN Enable Input Voltage (V )............................ –0.3V to +32V EN (3) Power Dissipation (P ) ...........................Internally Limited D Junction Temperature (T ) ........................–40°C to +125°C J Storage Temperature ...

Page 5

Micrel Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. The maximum allowable power dissipation of any T allowable power dissipation will result in excessive ...

Page 6

Micrel Typical Characteristics December 2007 (V = 3V) OUT 6 MIC5239 M9999-121007 ...

Page 7

Micrel Typical Characteristics (continued) Input Current 120 100 LOAD 0 -20 - SUPPLY VOLTAGE (V) Functional Characteristics December 2007 (V = 3V) OUT 7 MIC5239 M9999-121007 ...

Page 8

Micrel Functional Diagram December 2007 Block Diagram — Fixed Voltages Block Diagram — Adjustable Voltages 8 MIC5239 M9999-121007 ...

Page 9

Micrel Application Information The MIC5239 provides all of the advantages of the MIC2950: wide input voltage range, and reversed- battery protection, with the added advantages of reduced quiescent current and smaller package. Additionally, when disabled, quiescent current is reduced to ...

Page 10

Micrel Current Limit Figure 4 displays a method for reducing the steady state short-circuit current. The duration that the supply delivers current is set by the time required for the error flag output to discharge the 4.7µF capacitor tied to ...

Page 11

Micrel ∆ (max) – T (max (max) = 125° (max) = maximum ambient operating A temperature For example, the maximum ambient temperature is 50°C, the ∆T is determined as follows: ∆T = 125°C ...

Page 12

Micrel Adjustable Regulator Application Figure 10. Adjustable Voltage Application December 2007 The MIC5239YM 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: ⎛ ⎞ ...

Page 13

Micrel Package Information December 2007 8-Pin MSOP (MM) SOT-223 (S) 13 MIC5239 M9999-121007 ...

Page 14

Micrel MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility ...

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