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MIC29510-3.3WT

P1-P3P4-P6P7-P9P10-P10
MIC29510/29512
5A Fast-Response LDO Regulator
Super ßeta PNP is a trademarks of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
May 2006
M9999-051706
(408) 955-1690
General Description
The MIC29510 and MIC29512 are high-current, high-
accuracy, 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.
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
negative 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°C to +125°C.
For applications requiring even lower dropout voltage,
input voltage greater than 16V, or an error flag, see the
MIC29500/29501/29502/29503.
Features
• Fast transient response
• 5A current capability
• 700mV dropout voltage at full load
• Low ground current
• Accurate 1% guaranteed tolerance
• “Zero” current shutdown mode (MIC29512)
• Fixed voltage and adjustable versions
Applications
• Pentium™, Pentium Plus™ and Power PC™
processor supplies
• High-efficiency “green” computer systems
• High-efficiency linear power supplies
• High-efficiency switching supply post regulator
• Battery-powered equipment
Typical Application
Fixed Regulator Configuration
Adjustable Regulator Configuration
Micrel, Inc. MIC29510/29512
May 2006
2
M9999-051706
(408) 955-1690
Ordering Information
Part Number
Standard RoHS Compliant*
Junction Temp. Range Voltage Current Package
MIC29510-3.3BT MIC29510-3.3WT
0ºC to +125ºC
3.3V 5A TO-220-3
MIC29510-5.0BT MIC29510-5.0WT
0ºC to +125ºC
5.0V 5A TO-220-3
MIC29512BT MIC29512WT
0ºC to +125ºC
Adj. 5A TO-220-5
* RoHS compliant with ‘high-melting solder’ exemption.
Pin Configuration
1 2 3
12345
MIC29510BT/WT
MIC29512BT/WT
On all devices, the Tab is grounded
Pin Description
3-Pin TO-220 (MIC29510)
Pin
Number
Pin
Name
Pin Function
1 IN Unregulated Input: +16V maximum supply.
2 GND Ground: Internally connected to tab (ground).
3 OUT Regulated Output.
5-Pin TO-220 (MIC29512)
Pin
Number
Pin
Name
Pin Function
1 EN Enable (Input): Logic-level ON/OFF control.
2 IN Unregulated Input: +16V maximum supply.
3 GND Ground: Internally connected to tab (ground).
4 OUT Regulated Output.
5 ADJ Output Voltage Adjust: 1.240V feedback from external resistive divider.
Micrel, Inc. MIC29510/29512
May 2006
3
M9999-051706
(408) 955-1690
Absolute Maximum Ratings
Input Supply Voltage
(1)
................................... –20V to +20V
Power Dissipation .....................................Internally Limited
Storage Temperature Range ....................–65°C to +150°C
Ambient Temperature Range (soldering, 5 sec.)....... 260°C
Operating Ratings
Operating Junction Temperature ...................0ºC to +125ºC
(θ
JC
) (TO-220) ............................................................2°C/W
(θ
JA
) (TO-220)...........................................................55°C/W
Electrical Characteristics
All measurements at T
J
= 25°C unless otherwise noted. Bold values are guaranteed across the operating temperature range.
Parameter Conditions Min Typ Max Units
Output Voltage
10mA ≤ I
O
≤ I
FL
, (V
OUT
+ 1V) ≤ V
IN
≤ 8V (Note 2)
–2 2
%
Line Regulation
I
O
= 10mA, (V
OUT
+ 1V) ≤ V
IN
≤ 8V
0.06 0.5 %
Load Regulation
V
IN
= V
OUT
+ 1V, 10mA ≤ I
OUT
≤ I
FULL LOAD
(Notes 2, 6))
0.2 1 %
∆V
O
/∆T
Output Voltage Temperature Coefficient (Note 6)
20 100 ppm/ºC
Dropout Voltage
∆V
OUT
= – 1% (Note 3)
MIC29510/29512 I
O
= 100mA
I
O
= 750mA
I
O
= 1.5A
I
O
= 3A
I
O
= 5A
80
200
320
500
700
200
1000
mV
mV
mV
mV
mV
Ground Current
MIC29510/29512 I
O
= 750mA, V
IN
= V
OUT
+ 1V
I
O
= 1.5A
I
O
= 3A
I
O
= 5A
3
10
36
100
20
150
mA
mA
mA
mA
I
GNDDO
Ground Pin Current at Dropout
V
IN
= 0.5V less than specified V
OUT
. I
OUT
= 10mA
2 3 mA
Current Limit
MIC29510/29512 V
OUT
= 0V (Note 4)
5.0 6.5 A
e
n
, Output Noise Voltage
(10Hz to 100kHz) I
L
= 100mA
C
L
= 47µF
260 µV
RMS
Reference (MIC29512 only)
Parameter Conditions Min Typ Max Units
Reference Voltage
10mA ≤ I
O
≤ I
FL
, V
OUT
+ 1V ≤ V
IN
≤ 8V (Note 2)
1.215
1.265
V
MAX
Adjust Pin Bias Current 40
80
120
nA
nA
Reference Voltage Temperature
Coefficient
(Note 7)
20
ppm/ºC
Adjust Pin Bias Current Temperature
Coefficient
0.1
nA/ºC
P1-P3P4-P6P7-P9P10-P10

MIC29510-3.3WT

Mfr. #:
Buy MIC29510-3.3WT
Manufacturer:
Microchip Technology / Micrel
Description:
LDO Voltage Regulators 5.0A LDO Fixed Voltage
Lifecycle:
New from this manufacturer.
Delivery:
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