MIC29710/29712
7.5A Fast-Response LDO Regulator
General Description
Features
The MIC29710 and MIC29712 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’s proprietary Super ßeta PNP® process.
• Fast transient response
• 7.5A current capability
• 700mV dropout voltage at full load
• Low ground current
• Accurate 2% guaranteed tolerance
• “Zero” current shutdown mode (MIC29712)
• Fixed voltage and adjustable versions
The MIC29710 is available in the 3-pin fixed output and
the MIC29712 is available in the 5-pin adjustable output
voltage. Both versions are fully protected against
overcurrent faults, reversed lead insertion, over-
temperature operation, and positive and negative transient
voltage spikes.
Applications
• Pentium®, Pentium® Plus, and Power PC® processor
A TTL compatible enable (EN) control pin supports
external on/off control. If on/off control is not required, the
device maybe continuously enabled by connecting EN to
IN.
supplies
• High-efficiency “green” computer systems
• High-efficiency linear power supplies
• High-efficiency switching supply post regulator
• Battery-powered equipment
The MIC29710 is available in the standard 3-pin TO-220
package the MIC29712 is available in the 5-pin TO-220
package with an operating junction temperature range of
0°C to +125°C.
For applications requiring even lower dropout voltage or
input voltage greater than 16V, see the MIC29750/29752.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
R1
R2
⎛
⎜
⎞
VOUT = 1.240
+ 1
⎟
⎝
⎠
Fixed Regulator Configuration
Adjustable Regulator Configuration
Super ßeta PNP is a registered trademark of Micrel, Inc. Pentium is a registered trademark of Intel Corporation.
PowerPC is a registered trademark of IBM Corporation.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-101906
October 2006
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