MIC29510/29512
Micrel
MIC29510/29512
5A Fast-Response LDO Regulator
Preliminary Information
General Description
The MIC29510 and MIC29512 are high-current, high-accu-
racy, low-dropout voltage regulators featuring fast transient
recovery from input voltage surges and output load current
changes. These regulators use a PNP pass element that
features Micrel鈥檚 proprietary Super 脽eta PNP鈩?process.
The MIC29510/2 is available in two versions: the three pin
fixed output MIC29510 and the five pin adjustable output
voltage MIC29512. All versions are fully protected against
overcurrent faults, reversed input polarity, reversed lead
insertion, overtemperature operation, and positive and nega-
tive transient voltage spikes.
A TTL compatible enable (EN) control pin supports external
on/off control. If on/off control is not required, the device may
be continuously enabled by connecting EN to IN.
The MIC29510/2 is available in the standard three and five
pin TO-220 package with an operating junction temperature
range of 0擄C to +125擄C.
Features
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Fast transient response
5A current capability
700mV dropout voltage at full load
Low ground current
Accurate 1% guaranteed tolerance
鈥淶ero鈥?current shutdown mode (MIC29512)
Fixed voltage and adjustable versions
Applications
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Pentium鈩?and Power PC鈩?processor supplies
High-efficiency 鈥済reen鈥?computer systems
High-efficiency linear power supplies
High-efficiency switching supply post regulator
Battery-powered equipment
For applications requiring even lower dropout voltage, input
voltage greater than 16V, or an error flag, see the MIC29500/
29501/29502/29503.
Ordering Information
Part Number
MIC29510-3.3BT
MIC29510-5.0BT
MIC29512BT
* Junction Temperature
Temp. Range*
0擄C to +125擄C
0擄C to +125擄C
0擄C to +125擄C
Voltage
3.3V
5.0V
Adj.
Current
5.0A
5.0A
5.0A
Package
TO-220-3
TO-220-3
TO-220-5
Typical Application
MIC29510
V
IN
IN
OUT
V
OUT
On
Off
MIC29512
EN
IN
GND
OUT
R1
V
IN
ADJ
R2
V
OUT
GND
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R1
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+1
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V
OUT
= 1 240
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.
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R2
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Fixed Regulator Configuration
Adjustable Regulator Configuration
3-96
1997
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