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TPS76601 Datasheet(PDF) 15 Page - Texas Instruments

Part No. TPS76601
Description  ULTRALOW QUIESCENT CURRENT 250-mA LOW DROPOUT VOLTAGE REGULATORS
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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TPS76601 Datasheet(HTML) 15 Page - Texas Instruments

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PROGRAMMING THE TPS76601 ADJUSTABLE LDO REGULATOR
(1)
(2)
TPS76615
,, TPS76618,, TPS76625
TPS76627, TPS76628, TPS76630
TPS76633, TPS76650, TPS76601
www.ti.com................................................................................................................................................. SLVS237C – AUGUST 1999 – REVISED JANUARY 2009
Figure 28. Typical Application Circuit (Fixed Versions)
The output voltage of the TPS76601 adjustable regulator is programmed using an external resistor divider as
shown in Figure 29. The output voltage is calculated using:
Where:
• V
ref = 1.224 V typ (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 7-
µA divider current. Lower value resistors can be
used but offer no inherent advantage and waste more power. Higher values should be avoided because leakage
currents at FB increase the output voltage error. The recommended design procedure is to choose R2 = 169 k
to set the divider current at 7
µA, and then calculate R1 using:
Figure 29. TPS76601 Adjustable LDO Regulator Programming
Copyright © 1999–2009, Texas Instruments Incorporated
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Product Folder Link(s): TPS76615 TPS76618 TPS76625 TPS76627 TPS76628 TPS76630 TPS76633 TPS76650
TPS76601


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