ISL72991RH
TM
Data Sheet
December 2001
FN9054
Radiation Hardened Negative Low
Dropout Adjustable Voltage Regulator
The radiation hardened ISL72991RH is a low dropout
adjustable negative regulator with an output voltage range of
-2.25V to -26V. The device features a 1A output current
capability, an adjustable current limit pin (I
LIM
) and a
shutdown pin (SD) for easy on/off control.
The device incorporates unique circuitry that enables
precision performance over the -55C to +125C temperature
range and post-irradiation. Speci鏗乧ations include a reference
voltage of -1.25V +40mV/-50mV (max), line regulation of
+/-25mV (max), and load regulation of +/-15mV (max).
Constructed with the Intersil dielectrically isolated Rad Hard
Silicon Gate (RSG) BiCMOS process, these devices are
immune to Single Event Latch-up and have been speci鏗乧ally
designed to provide highly reliable performance in harsh
radiation environments.
Speci鏗乧ations for Rad Hard QML devices are controlled
by the Defense Supply Center in Columbus (DSCC). The
SMD numbers listed here must be used when ordering.
Detailed Electrical Speci鏗乧ations for these devices are
contained in SMD 5962-02503. A 鈥榟otlink鈥?is provided on
the Intersil website for downloading.
Features
鈥?Electrically Screened to DSCC SMD # 5962-02503
鈥?QML Quali鏗乪d per MIL-PRF-38535 Requirements
鈥?Radiation Environment
- Total Dose (Max). . . . . . . . . . . . . . . . . . . . . 300krad(SI)
- Latch-Up Immune
鈥?Line Regulation . . . . . . . . . . . . . . . . . . . . . +/-25mV (max)
鈥?Load Regulation . . . . . . . . . . +/-12mV (typ); +/-15mV (max)
鈥?Output Voltage Range . . . . . . . . . . . . . . . . -2.25V to -26V
鈥?Dropout Voltage (100mA) . . . . . . . . 0.2V (typ); 0.3V (max)
鈥?Dropout Voltage (1A) . . . . . . . . . . . . . . . . . . . . . 1V (max)
鈥?Minimum Load Current. . . . . . . . . . . . . . . . . . . . . . .3.0mA
鈥?TTL Input-Level Shutdown (SD); Low = On
Applications
鈥?Switching Power Supplies
鈥?DC/DC Converters
鈥?Motor Controllers
Ordering Information
ORDERING NUMBER
INTERNAL
MKT. NUMBER
ISL72991RHVF
ISL72991RHQF
ISL72991RHVX
ISL72991RHF/Proto
TEMP. RANGE
(
o
C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
Pinout
ISL72991RHF (FLATPACK CDFP3-F28)
TOP VIEW
VIN
VIN
NC
NC
NC
NC
NC
NC
NC
NC
GND
ILIM
VOUT
VOUT
5962F0250301VXC
5962F0250301QXC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VIN
VIN
NC
NC
NC
NC
NC
NC
NC
NC
ADJ
SD
VOUT
VOUT
5962F0250301V9A
ISL72991RHF/Proto
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2001. All Rights Reserved
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