ADM869LARQ-REEL7 Analog Devices Inc, ADM869LARQ-REEL7 Datasheet

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ADM869LARQ-REEL7

Manufacturer Part Number
ADM869LARQ-REEL7
Description
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADM869LARQ-REEL7

Input Voltage Range
2.7 to 5.5V
Number Of Inputs
1
Number Of Outputs
1
Mounting
Surface Mount
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Not Compliant
a
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
FEATURES
2 A Load Current
45 m
User-Settable Current Limit
12 A Typical Quiescent Current
10 nA Typical Shutdown Current
40 nA Typical Switch Off Leakage
Short-Circuit Protection
Thermal Shutdown
FAULT Output
Small, 16-Lead QSOP Package
APPLICATIONS
Desktop Computers
Palmtop Computers
Notebook Computers
Hand-Held Instruments
Universal Serial Bus (USB)
(2.7V TO 5.5V)
On Resistance
IN
22 F
ON
ADM869L
TEMPERATURE
SENSOR AND
CIRCUITRY
CONTROL
MIRROR FET
ON
MAIN FET
OVERTEMP
FUNCTIONAL BLOCK DIAGRAM
AMPLIFIER
2 A, High-Side P-Channel Switch with
MIRROR
Current Limit and Thermal Shutdown
ON
GENERAL DESCRIPTION
The ADM869L is a logic controlled P-channel switch with low
on resistance, capable of sourcing up to 2 A from supply voltages
between 2.7 V and 5.5 V. A user-settable current limit allows
the trip current to be set between 400 mA and 2 A with an
accuracy of ± 21%. This allows the system power supply to be
protected against short circuits and surge currents in peripheral
loads powered via the ADM869L. Over-current and over-
temperature conditions are signalled by a FAULT output.
The ADM869L also offers low quiescent current of typically
12 µA and shutdown current of typically 10 nA.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
ON
AMPLIFIER
CURRENT
LIMIT
REFERENCE
BANDGAP
1.24V
ON
© 2003 Analog Devices, Inc. All rights reserved.
FAULT
SET
GND
0.1 F
R
OUT
SET
0 TO 5.5V
V
PULLUP
ADM869L
R
10k
PULLUP
TO 100k
www.analog.com

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ADM869LARQ-REEL7 Summary of contents

Page 1

FEATURES 2 A Load Current Resistance User-Settable Current Limit 12 A Typical Quiescent Current 10 nA Typical Shutdown Current 40 nA Typical Switch Off Leakage Short-Circuit Protection Thermal Shutdown FAULT Output Small, 16-Lead QSOP Package APPLICATIONS ...

Page 2

ADM869L–SPECIFICATIONS Parameter Operating Voltage Range Quiescent Current Shutdown Supply Current Off-Switch Current Undervoltage Lockout On Resistance Nominal Current-Limit Setting Range Current-Limit Amplifier Threshold I /I Current Ratio OUT SET ON Input Low Voltage Input High Voltage, V ...

Page 3

... Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. THERMAL CHARACTERISTICS 16-Lead QSOP Package: θ = 50°C/W, θ = 10°C ORDERING GUIDE Temperature Package Model Range Description ADM869LARQ –40°C to +85°C 16-Lead QSOP RQ-16 Pin Mnemonic 12, 13 11, 14, 15 OUT GND 9 SET FAULT 10 CAUTION ESD (electrostatic discharge) sensitive device ...

Page 4

ADM869L–Typical Performance Characteristics – INPUT VOLTAGE – Volts TPC 1. Quiescent Current vs. Input Voltage 13.0 12.5 12.0 11.5 11.0 10.5 10.0 –40 ...

Page 5

OUTPUT VOLTAGE TPC 7. Normalized Output Current vs. Output Voltage REV. B 350 300 250 200 150 100 50 0 3.5 4.0 4.5 5.0 –40 TPC ...

Page 6

ADM869L V , 5V/DIV FAULT 5V/DIV OUT 4A/DIV OUT 5V/DIV IN 4 CH1 5.00V CH2 5.00V M 20.0 s CH3 TPC 10. Fast Current-Limit Response V , 5V/DIV FAULT 1 T ...

Page 7

FUNCTIONAL DESCRIPTION The ADM869L comprises a high-current P-channel switch con- trolled by an active-low logic input ON (Pin 7). When ON is low, the internal circuitry of the ADM869 is powered up and the output of the current-limit amplifier is ...

Page 8

ADM869L 0.065 0.049 0.010 0.004 COPLANARITY Revision History Location 4/03—Data Sheet changed from REV REV. B. Added ESD Caution . . . . . . . . . . . . . . . . . . . ...

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