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LM137HVH-QMLV Datasheet

  • LM137HVH-QMLV

  • 3-Terminal Adjustable Negative Regulators (High Voltage)

  • 343.41KB

  • 10頁

  • NSC

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LM137HV/LM337HV 3-Terminal Adjustable Negative Regulators (High Voltage)
May 1999
LM137HV/LM337HV
3-Terminal Adjustable Negative Regulators
(High Voltage)
General Description
The LM137HV/LM337HV are adjustable 3-terminal negative
voltage regulators capable of supplying in excess of 鈭?.5A
over an output voltage range of 鈭?.2V to 鈭?7V. These regu-
lators are exceptionally easy to apply, requiring only 2 exter-
nal resistors to set the output voltage and 1 output capacitor
for frequency compensation. The circuit design has been op-
timized for excellent regulation and low thermal transients.
Further, the LM137HV series features internal current limit-
ing, thermal shutdown and safe-area compensation, making
them virtually blowout-proof against overloads.
The LM137HV/LM337HV serve a wide variety of applica-
tions
including
local
on-card
regulation,
programmable-output voltage regulation or precision current
regulation. The LM137HV/LM337HV are ideal complements
to the LM117HV/LM317HV adjustable positive regulators.
Features
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Output voltage adjustable from 鈭?.2V to 鈭?7V
1.5A output current guaranteed, 鈭?5藲C to +150藲C
Line regulation typically 0.01%/V
Load regulation typically 0.3%
Excellent thermal regulation, 0.002%/W
77 dB ripple rejection
Excellent rejection of thermal transients
50 ppm/藲C temperature coefficient
Temperature-independent current limit
Internal thermal overload protection
P
+
Product Enhancement tested
Standard 3-lead transistor package
Output short circuit protected
Typical Applications
Adjustable Negative Voltage Regulator
DS009066-1
DS009066-25
鈥?/div>
C1 = 1 碌F solid tantalum or 10 碌F aluminum electrolytic required for stability. Output capacitors in the range of 1 碌F to 1000 碌F of aluminum or tantalum
electrolytic are commonly used to provide improved output impedance and rejection of transients.
*
C2 = 1 碌F solid tantalum is required only if regulator is more than 4" from power-supply filter capacitor.
漏 1999 National Semiconductor Corporation
DS009066
www.national.com

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