廬
ISL72991RH
Data Sheet
June 2004
FN9054.1
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 -55擄C to +125擄C temperature
range and post-irradiation. Specifications include a reference
voltage of -1.25V +40mV/-50mV (max), line regulation of
鹵25mV (max), and load regulation of 鹵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 specifically
designed to provide highly reliable performance in harsh
radiation environments.
Specifications 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 Specifications 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 Qualified per MIL-PRF-38535 Requirements
鈥?Radiation Environment
- Total Dose (Max) . . . . . . . . . . . . . . . . . . . . 300krad(SI)
- Latch-Up Immune
鈥?Line Regulation . . . . . . . . . . . . . . . . . . . . . . 鹵25mV (max)
鈥?Load Regulation . . . . . . . . . . . . 鹵12mV (typ); 鹵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
(擄C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
Pinout
ISL72991RHF (FLATPACK CDFP3-F28)
TOP VIEW
5962F0250301VXC
5962F0250301QXC
VIN
VIN
NC
NC
NC
NC
NC
NC
NC
NC
GND
ILIM
VOUT
VOUT
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
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002, 2004. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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