MICREL MIC29502BT, MIC29502BU, MIC29503BT, MIC29503BU, MIC29501-5.0BU Datasheet

MIC29150/29300/29500/29750 Micrel

MIC29150/29300/29500/29750 Series

High-Current Low-Dropout Regulators

General Description

The MIC29150/29300/29500/29750 are high current, high
accuracy, low-dropout voltage regulators. Using Micrel's
proprietary Super ßeta PNP™ process with a PNP pass
element, these regulators feature 300mV to 370mV (full load)
dropout voltages and very low ground current. Designed for
high current loads, these devices also find applications in
lower current, extremely low dropout-critical systems, where
their tiny dropout voltage and ground current values are
important attributes.

The MIC29150/29300/29500/29750 are fully protected against
overcurrent faults, reversed input polarity, reversed lead
insertion, overtemperature operation, and positive and nega­tive transient voltage spikes. Five pin fixed voltage versions
feature logic level ON/OFF control and an error flag which
signals whenever the output falls out of regulation. Flagged
states include low input voltage (dropout), output current
limit, overtemperature shutdown, and extremely high voltage
spikes on the input.

On the MIC29xx1 and MIC29xx2, the ENABLE pin may be
tied to V
MIC29150/29300/29500 are available in 3- and 5-pin TO-220
and surface mount TO-263 packages. The MIC29750 7.5A
regulators are available in 3- and 5-pin TO-247 packages.

if it is not required for ON/OFF control. The

IN

Features

• High Current Capability

MIC29150/29151/29152/29153................................1.5A

MIC29300/29301/29302/29303...................................3A

MIC29500/29501/29502/29503...................................5A

MIC29750/29751/29752...........................................7.5A

• Low-Dropout Voltage .......................350mV at Full Load

• Low Ground Current

• Accurate 1% Guaranteed Tolerance

• Extremely Fast Transient Response

• Reverse-battery and “Load Dump” Protection

• Zero-Current Shutdown Mode (5-Pin versions)

• Error Flag Signals Output Out-of-Regulation
(5-Pin versions)

• Also Characterized For Smaller Loads With Industry­Leading Performance Specifications

• Fixed Voltage and Adjustable Versions

Applications

• Battery Powered Equipment

• High-Efficiency “Green” Computer Systems

• Automotive Electronics

• High-Efficiency Linear Power Supplies

• High-Efficiency Post-Regulator For Switching Supply

Pin Configuration

1 2 3

MIC29150/29300/

29500BT and

MIC29750BWT

1 2 3 4 5

MIC29151/29152/29153BT
MIC29301/29302/29303BT
MIC29501/29502/29503BT

MIC29751/29752BWT

1 2 3

MIC29150/29300BU

Pinout On all devices, the Tab is grounded.

MIC29150/29300/29500/29750 Three Terminal
Devices:

Pin 1 = Input, 2 = Ground, 3 = Output

MIC29151/29301/29501/29751 Five Terminal
Fixed Voltage Devices:

Pin 1 = Enable, 2 = Input, 3 = Ground, 4 = Output,
5 = Flag

MIC29152/29302/29502/29752 Adjustable with
ON/OFF Control

Pin 1 = Enable, 2 = Input, 3 = Ground, 4 = Output,
5 = Adjust

MIC29153/29303/29503 Adjustable with Flag

Pin 1 = Flag, 2 = Input, 3 = Ground, 4 = Output,
5 = Adjust

1 2 3 4 5

MIC29151/29152/29153BU
MIC29301/29302/29303BU
MIC29501/29502/29503BU

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com

March 2000 1 MIC29150/29300/29500/29750

MIC29150/29300/29500/29750 Micrel

Ordering Information

Part Number Temp. Range* VoltsCurrent Package

MIC29150-3.3BT –40 to +125°C 3.3 1.5A TO-220
MIC29150-4.2BT –40 to +125°C 4.2 1.5A TO-220
MIC29150-5.0BT –40 to +125°C 5.0 1.5A TO-220
MIC29150-12BT –40 to +125°C 12 1.5A TO-220
MIC29150-3.3BU –40 to +125°C 3.3 1.5A TO-263
MIC29150-5.0BU –40 to +125°C 5.0 1.5A TO-263
MIC29150-12BU –40 to +125°C 12 1.5A TO-263
MIC29151-3.3BT –40 to +125°C 3.3 1.5A TO-220-5
MIC29151-5.0BT –40 to +125°C 5.0 1.5A TO-220-5
MIC29151-12BT –40 to +125°C 12 1.5A TO-220-5
MIC29151-3.3BU –40 to +125°C 3.3 1.5A TO-263-5
MIC29151-5.0BU –40 to +125°C 5.0 1.5A TO-263-5
MIC29151-12BU –40 to +125°C 12 1.5A TO-263-5
MIC29152BT –40 to +125°C Adj 1.5A TO-220-5
MIC29152BU –40 to +125°C Adj 1.5A TO-263-5
MIC29153BT –40 to +125°C Adj 1.5A TO-220-5
MIC29153BU –40 to +125°C Adj 1.5A TO-263-5
MIC29300-3.3BT –40 to +125°C 3.3 3.0A TO-220
MIC29300-5.0BT –40 to +125°C 5.0 3.0A TO-220
MIC29300-12BT –40 to +125°C 12 3.0A TO-220
MIC29300-3.3BU –40 to +125°C 3.3 3.0A TO-263
MIC29300-5.0BU –40 to +125°C 5.0 3.0A TO-263
MIC29300-12BU –40 to +125°C 12 3.0A TO-263
MIC29301-3.3BT –40 to +125°C 3.3 3.0A TO-220-5
MIC29301-5.0BT –40 to +125°C 5.0 3.0A TO-220-5
MIC29301-12BT –40 to +125°C 12 3.0A TO-220-5
MIC29301-3.3BU –40 to +125°C 3.3 3.0A TO-263-5
MIC29301-5.0BU –40 to +125°C 5.0 3.0A TO-263-5
MIC29301-12BU –40 to +125°C 12 3.0A TO-263-5
MIC29302BT –40 to +125°C Adj 3.0A TO-220-5
MIC29302BU –40 to +125°C Adj 3.0A TO-263-5
MIC29303BT –40 to +125°C Adj 3.0A TO-220-5
MIC29303BU –40 to +125°C Adj 3.0A TO-263-5

Part Number Temp. Range* VoltsCurrent Package

MIC29500-3.3BT –40 to +125°C 3.3 5.0A TO-220
MIC29500-5.0BT –40 to +125°C 5.0 5.0A TO-220
MIC29501-3.3BT –40 to +125°C 3.3 5.0A TO-220-5
MIC29501-5.0BT –40 to +125°C 5.0 5.0A TO-220-5
MIC29501-3.3BU –40 to +125°C 3.3 5.0A TO-263-5
MIC29501-5.0BU –40 to +125°C 5.0 5.0A TO-263-5
MIC29502BT –40 to +125°C Adj 5.0A TO-220-5
MIC29502BU –40 to +125°C Adj 5.0A TO-263-5
MIC29503BT –40 to +125°C Adj 5.0A TO-220-5
MIC29503BU –40 to +125°C Adj 5.0A TO-263-5
MIC29750-3.3BWT –40 to +125°C 3.3 7.5A TO-247-3
MIC29750-5.0BWT –40 to +125°C 5.0 7.5A TO-247-3
MIC29751-3.3BWT –40 to +125°C 3.3 7.5A TO-247-5
MIC29751-5.0BWT –40 to +125°C 5.0 7.5A TO-247-5
MIC29752BWT –40 to +125°C Adj 7.5A TO-247-5

* Junction Temperature

MIC29xx0 versions are 3-terminal fixed voltage devices.
MIC29xx1 are fixed voltage devices with ENABLE and ERROR
flag. MIC29xx2 are adjustable regulators with ENABLE control.
MIC29xx3 are adjustables with an ERROR flag.

MIC29150/29300/29500/29750 2 March 2000

MIC29150/29300/29500/29750 Micrel

Absolute Maximum Ratings

Power Dissipation ....................................Internally Limited

Lead Temperature (Soldering, 5 seconds)................260°C

Storage Temperature Range ...................–65°C to +150°C

Input Supply Voltage (Note 1) ....................... –20V to +60V

Operating Ratings

Operating Junction Temperature .............–40°C to +125°C

Maximum Operating Input Voltage............................... 26V

TO-220 θJC.............................................................. 2°C/W

TO-263 θJC.............................................................. 2°C/W

TO-247 θJC........................................................... 1.5°C/W

Electrical Characteristics

All measurements at TJ = 25°C unless otherwise noted. Bold values are guaranteed across the operating temperature range.
Adjustable versions are programmed to 5.0V.

Parameter Condition Min Typ Max Units

Output Voltage IO = 10mA –1 1 %

10mA ≤ IO ≤ IFL, (V
Line Regulation IO = 10mA, (V
Load Regulation VIN = V
∆V

O

∆T Temperature Coef.
Dropout Voltage ∆V

Output Voltage(Note 6) 20 100 ppm/°C

OUT

OUT

+ 5V, 10mA ≤ I

OUT

= – 1%, (Note 3)

MIC29150 I

I
I

MIC29300 I

I
I

MIC29500 I

I
I

MIC29750 I

I
IO = 7.5A 425 600

Ground Current MIC29150 I

I

MIC29300 I

I

MIC29500 I

I

MIC29750 I

IO = 7.5A 120

I

Ground Pin VIN = 0.5V less than specified V

GNDDO

Current at Dropout MIC29150 0.9 mA

MIC29300 1.7 mA

MIC29500 2.1 mA

MIC29750 3.1 mA
Current Limit MIC29150 V

MIC29300 V

MIC29500 V

MIC29750 V
en, Output Noise CL = 10µF 400 µV (rms)

Voltage
(10Hz to 100kHz) CL = 33µF 260
IL = 100mA

Ground Current in Shutdown MIC29150/1/2/3 only VEN= 0.4V 2 10 µA

+ 1V) ≤ VIN ≤ 26V (Note 2) –2 2 %

OUT

+ 1V) ≤ VIN ≤ 26V 0.06 0.5 %

≤ I

OUT

FULL LOAD

= 100mA 80 200 mV

O

= 750mA 220

O

= 1.5A 350 600

O

= 100mA 80 175

O

= 1.5A 250

O

= 3A 370 600

O

= 250mA 125 250

O

= 2.5A 250

O

= 5A 370 600

O

= 250mA 80 200

O

= 4A 270

O

= 750mA, VIN = V

O

= 1.5A 22

O

= 1.5A, VIN = V

O

= 3A 37

O

= 2.5A, VIN = V

O

= 5A 70

O

= 4A, VIN = V

O

= 0V (Note 4) 2.1 3.5 A

OUT

= 0V (Note 4) 4.5 5.0 A

OUT

= 0V (Note 4) 7.5 10.0 A

OUT

= 0V (Note 4) 9.5 15 A

OUT

OUT

OUT

OUT

+ 1V 35 75 mA

OUT

. I

OUT

OUT

(Note 2, 6) 0.2 1 %

+ 1V 8 20 mA
+ 1V 10 35 mA
+ 1V 15 50 mA

= 10mA

30 µA

March 2000 3 MIC29150/29300/29500/29750

MIC29150/29300/29500/29750 Micrel

Electrical Characteristics (Continued)

Reference MIC29xx2/MIC29xx3

Parameter Conditions Min Typical Max Units

Reference Voltage 1.228 1.240 1.252 V

1.215 1.265 V max
Reference Voltage (Note 8) 1.203 1.277 V
Adjust Pin 40 80 nA

Bias Current 120
Reference Voltage (Note 7) 20 ppm/°C

Temperature
Coefficient

Adjust Pin Bias 0.1 nA/°C
Current Temperature
Coefficient

Flag Output (Error Comparator)

Output Leakage V
Current 2.00

Output Low Device set for 5V. V
Voltage I

Upper Threshold Device set for 5V (Note 9) 40 60 mV
Voltage 25

Lower Threshold Device set for 5V (Note 9) 75 95 mV
Voltage 140

Hysteresis Device set for 5V (Note 9) 15 mV

ENABLE Input

Input Logic Voltage V
Low (OFF) 0.8
High (ON) 2.4

Enable Pin V
Input Current 750

OL

MIC29xx1/MIC29xx2

VEN =0.8V 1 µA

MIC29xx1/29xx3

= 26V 0.01 1.00 µA

OH

= 4.5V 220 300 mV

= 250µA 400

= 26V 100 600 µA

EN

IN

2

Regulator Output (Note 10) 10 µA
Current in Shutdown 500

MIC29150/29300/29500/29750 4 March 2000

MIC29150/29300/29500/29750 Micrel

5

Notes

Note 1: Maximum positive supply voltage of 60V must be of limited duration (<100msec) and duty cycle (≤1%). The maximum continuous supply

Note 2: Full Load current (I
Note 3: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V

Note 4: VIN = V

Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground

Note 6: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 7: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line

Note 8: V
Note 9: Comparator thresholds are expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured at

Note 10: VEN ≤ 0.8V and VIN ≤ 26V, V
Note 11: When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to

voltage is 26V.

) is defined as 1.5A for the MIC29150, 3A for the MIC29300, 5A for the MIC29500, and 7.5A for the MIC29750 families.

FL

to V

IN

OUT (nominal)

minimize temperature rise.

+ 1V. For example, use VIN = 4.3V for a 3.3V regulator or use 6V for a 5V regulator. Employ pulse-testing procedures to

+ 1V applied

OUT

pin current.

regulation effects. Specifications are for a 200mA load pulse at VIN = 20V (a 4W pulse) for T = 10ms.

≤ V

REF

6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
example, at a programmed output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95 mV x 5V/1.240 V = 384
mV. Thresholds remain constant as a percent of V

7.7% guaranteed.

≤ (VIN – 1 V), 2.3V ≤ VIN ≤ 26V, 10mA < IL ≤ IFL, TJ ≤ T

OUT

as V

OUT

= 0.

OUT

J MAX.

/V

OUT

is varied, with the dropout warning occurring at typically 5% below nominal,

OUT

= (R1 + R2)/R2. For

REF

ground.

Block Diagram

IN

FLAG

EN

Typical Applications

V ± 5%

MIC29500-3.3

1.180V
Reference

3.3V ± 1% @ 5A

47µF

1.240V

O.V.
I

LIMIT

28V

Thermal

Shut­down

* Feedback network in fixed versions only

†

Adjustable version only

V

IN

R1

V

R1*

R2*

OUT

OUT

ADJ

GND

†

R2

V

= 1.240V × [1 + (R1 / R2)]

OUT

Figure 1. Fixed output voltage. Figure 2. Adjustable output voltage configuration. For

best results, the total series resistance should be small
enough to pass the minimum regulator load current.

March 2000 5 MIC29150/29300/29500/29750

MIC29150/29300/29500/29750 Micrel

Typical Characteristics MIC2915x

MIC2915x Dropout Voltage

vs. Output Current

450
400
350
300
250
200
150
100

50

DROPOUT VOLTAGE (mV)

0

0.0 0.5 1.0 1.5
OUTPUT CURRENT (A)

MIC2915x Ground Current

vs. Output Current

25

20

15

10

5

GROUND CURRENT (mA)

0

0.0 0.4 0.8 1.2 1.6
OUTPUT CURRENT (A)

MIC2915x Dropout Voltage

0.8

0.7

0.6

0.5

0.4

0.3

0.2

DROPOUT VOLTAGE (V)

0.1

vs. Temperature

I

= 1.5A

LOAD

0

-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)

MIC2915x Ground Current

vs. Supply Voltage

1.2

1.0

0.8

0.6

0.4

0.2

GROUND CURRENT (mA)

0.0
0246810

SUPPLY VOLTAGE (V)

V

OUT

I

LOAD

= 5V
= 10mA

MIC29150-5.0

Dropout Characteristics

5.0

4.0
I

= 10mA

OUT

3.0

I

2.0

1.0

OUTPUT VOLTAGE (V)

0.0

0123456

INPUT VOLTAGE (V)

OUT

= 1.5A

MIC2915x Ground Current

vs. Supply Voltage

60

50

40

30

20

10

GROUND CURRENT (mA)

0

0246810

SUPPLY VOLTAGE (V)

MIC29152
I

= 1.5A

OUT

MIC2915x Ground Current

300

250

200

150

100

GROUND CURRENT (µA)

vs. Temperature

I

= 10mA

LOAD

50

0

-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)

MIC29150-3.3 Output

Voltage vs. Temperature

3.40

3.38

3.36

3.34

3.32

3.30

3.28

3.26

3.24

OUTPUT VOLTAGE (V)

3.22

3.20

3 DEVICES

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

MIC2915x Ground Current

2.5

2.0

1.5

1.0

0.5

GROUND CURRENT (mA)

0.0

vs. Temperature

I

= 250mA

LOAD

-60 -30 0 30 60 90 120 150
TEMPERATURE (°C)

MIC29150-3.3 Short Circuit

Current vs. Temperature

3.0

2.5

2.0

1.5

1.0

CURRENT (A)

0.5

0.0

V

= 0V

OUT

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

MIC2915x Ground Current

vs. Temperature

30

25

20

I

= 1.5A

15

10

5

GROUND CURRENT (mA)

0

-60 -30 0 30 60 90 120 150

LOAD

TEMPERATURE (°C)

MIC2915x Ground Current

vs. Input Voltage

1.2
R

= 100Ω

LOAD

V

= 5V

OUT

-30 -20 -10 0 10 20 30

INPUT VOLTAGE (V)

GROUND CURRENT (µA)

1.0

0.8

0.6

0.4

0.2

0.0

-0.2

MIC29150/29300/29500/29750 6 March 2000