mic37500 Micrel Semiconductor, mic37500 Datasheet

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mic37500

Manufacturer Part Number
mic37500
Description
5a, Low Voltage Ucap Ldo Regulator
Manufacturer
Micrel Semiconductor
Datasheet
General Description
The Micrel MIC37500/01/02 is a 5A low-dropout linear volt-
age regulator that provides a low voltage, high current output
with a minimum of external components. It offers high preci-
sion, ultra low dropout (500mV), and low ground current.
The MIC37500/01/02 operates from an input of 2.3V to 6.0V.
It is designed to drive digital circuits requiring low voltage at
high currents (i.e. PLDs, DSP, microcontroller, etc.). It is
available in fixed and adjustable output voltages. Fixed
voltages include 1.5V. The adjustable version is capable of
1.24V to 5.5V.
Features of the MIC37500/01/02 LDO include thermal and
current limit protection, and reverse current & reverse battery
protection. Logic enable and error flag pins are available.
Junction temperature range of the MIC37500/01/02 is from
–40 C to 125 C.
For applications requiring input voltage greater than 6.0V,
see MIC3910x, MIC3915x, MIC3930x, and MIC3950x LDOs.
Typical Application
SuperSwitcher is a trademark of Micrel, Inc.
January 2002
MIC37500/37501/37502
V
IN
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
= 3.0V
C
IN
Fixed 2.5V Regulator with Error Flag
VIN
VIN
VEN
MIC37500
GND
VOUT
VOUT
FLG
100k
C
100 F, Ceramic
OUT
V
OUT
= 2.5V
1
Features
• 5A minimum guaranteed output current
• 500mV maximum dropout voltage
• Stable with ceramic or tantalum capacitor
• Wide Input voltage range:
• Fixed and adjustable output voltages
• Excellent line and load regulation specifications
• Logic controlled shutdown
• Thermal shutdown and current limit protection
• Reverse-leakage protection
• Low profile S-Pak package
Applications
• LDO linear regulator for low-voltage digital IC
• PC add-in cards
• High efficiency linear power supplies
• SMPS post regulator
• Battery charger
1.0% initial output tolerance
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
V
V
IN
IN
C
IN
5A, Low Voltage Cap LDO Regulator
: 2.3V to 6.0V
MIC37500/37501/37502
Advance Information
VIN
VIN
VEN
Adjustable Regulator
MIC37502
GND
VOUT
VOUT
ADJ
MIC37500/37501/37502
R1
R2
1.3V
C
100 F, Ceramic
OUT
Micrel

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mic37500 Summary of contents

Page 1

... It offers high preci- sion, ultra low dropout (500mV), and low ground current. The MIC37500/01/02 operates from an input of 2.3V to 6.0V designed to drive digital circuits requiring low voltage at high currents (i.e. PLDs, DSP, microcontroller, etc.). It is available in fixed and adjustable output voltages ...

Page 2

... MIC37501-1.5BR *For other voltages contact Micrel. Pin Configuration Pin Description Pin Number Pin Name VIN 4 GND 5, 6 VOUT 7 FLG. ADJ. MIC37500/37501/37502 Output Current Voltage* Junction Temp. Range 5A ADJ. – +125 C 5A 1.5V – +125 C 7 FLG/ADJ 6 VOUT 5 VOUT ...

Page 3

... C/W JC Min Typ Max - 0.06 0.5 0.2 1 350 330 500 57 1.0 7.5 170 500 2.25 0 210 93 2 99.2 1.228 1.240 1.252 1.215 1.265 40 80 120 MIC37500/37501/37502 Micrel +125 C J Units % % % % ...

Page 4

... Note the quiescent current. I GND IN Note 7. For a 2.5V device 2.3V (device is in dropout). IN MIC37500/37501/37502 , depends upon the printed icurcuit layout. See “Applications Information.” GND OUT +1V. For output voltages below 1.75V, dropout ...

Page 5

... To convert down to 2.5V without operating in dropout, NPN-based regulators require an input voltage of 3.7V at the very least. The MIC37500/01/02 regulator will provide excellent performance with an input as low as 3.0V or 2.25V, respectively. This gives the PNP-based regulators a distinct advantage over older, NPN-based linear regulators. ...

Page 6

... MIC37500/37501/37502 Minimum Load Current The MIC37500/01/02 regulator is specified between finite loads. If the output current is too small, leakage currents dominate and the output voltage rises. A 10mA minimum load current is necessary for proper operation. Error Flag The MIC37501 features an error flag circuit that monitors the output voltage and signals an error condition when the voltage 5% below the nominal output voltage ...

Page 7

... BSC (1.27 BSC) January 2002 DIMENSIONS: 0.375 (9.52) INCH (MM) 0.365 (9.27) 0.360 (9.14) 0.350 (8.89) 0.080 (2.03) 0.070 (1.78) 0.256 BSC (6.50 BSC) 0.316 BSC (8.03 BSC) 0.420 (10.67) 0.410 (10.41) 0.031 (0.79) 0.025 (0.63) 7-Lead S-PAK (R) 7 0.010 BSC (0.25 BSC) 0.045 (1.14) 0.035 (0.89) 0.005 (0.13) 0.001 (0.03) 0.010 BSC (0.25 BSC SCALE 20:1 MIC37500/37501/37502 Micrel ...

Page 8

... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC37500/37501/37502 + 1 (408) 944-0970 http://www ...

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