Richtek RT9170 300mA, 15 A Quiescent Current CMOS LDO Regulator User Manual Data Sheet
Summary
This ultra-low quiescent current LDO voltage regulator is engineered specifically for extending battery life in portable electronics. Featuring a low dropout capability and reliable 300mA output, the RT9170 delivers stable power to devices like cell phones, notebooks, and hand-held instruments from a wide operating range (2V to 5.5V). The technical manual provides comprehensive resources, including detailed electrical characteristics, dimensional outlines across multiple packages, and application guides for professional designers utilizing battery-powered systems.
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RT9170Preliminary
300m A, 15µA Quiescent Current CMOS LDO Regulator General Description Features
The RT9170 is CMOS ultra low quiescent current and low Ultra-Low Quiescent Current (Typically 15µA) dropout (ULDO) regulators. The devices are capable of Guaranteed 300m A Output Current supplying 300m A of output current continuously. Low Dropout: 240m V at 300m A Wide Operating Voltage Ranges: 2V to 5.5V
The RT9170's performance is optimized for battery-
Fast Transient Response
powered systems to deliver 15µA ultra low quiescent
Tight Load and Line Regulation
current and extremely low dropout voltage. Regulator
TTL-Logic-Controlled Enable Input
ground current increases only slightly in dropout, further
Current Limiting & Thermal Protection
prolonging the battery life. The other features include ultra
Only 1µF Output Capacitor Required for Stability
low dropout voltage, high output accuracy, current limiting
High Power Supply Rejection Ratio
protection, and high ripple rejection ratio.
Custom Voltage Available
The devices are available in fixed output voltages range of
Ro HS Compliant and 100% Lead (Pb)-Free
1.2V to 3.3V with 0.1V per step. The RT9170 regulators are available in SOT-23-3, SOT-23-5 and 3-lead SOT-89 Applications packages.
Cellular Phones and Pagers Battery-Powered Equipment
Ordering Information
Laptop, Palmtops, Notebook Computers
RT9170-
Hand-Held Instruments Package Type PCMCIA Cards
V: SOT-23-3 B: SOT-23-5 Pin Configurations X : SOT-89
(TOP VIEW)
Operating Temperature Range C : Commercial Standard VIN NCEN P : Pb Free with Commercial Standard Output Voltage 12 : 1.2V 13 : 1.3V
GND VOUT
GND VIN VOUT
33 : 3.3V SOT-23-3 SOT-23-5
Note : Rich Tek Pb-free products are : −Ro HS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. −Suitable for use in Sn Pb or Pb-free soldering processes. −100%matte tin (Sn) plating.
GND VOUTVIN
Marking Information
(TAB)
For marking information, contact our sales representative
SOT-89
directly or through a Rich Tek distributor located in your area, otherwise visit our website for detail.
DS9170-08 March 2005 www.richtek.com
Page Summary Contents For Richtek RT9170 300mA, 15 A Quiescent Current CMOS LDO Regulator User Manual Data Sheet
Manual Details
| Brand | Current |
|---|---|
| Pages | 13 |
| File Size | 215.26 KB |
| Published | June 03, 2026 |
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Frequently Asked Questions
What is the typical quiescent current of the RT9170 regulator?
It boasts an ultra-low quiescent current, typically only 15µA.
Does this regulator support battery-powered applications?
Yes, its performance is optimized for power systems, including those running on batteries.
What output voltage range is available?
Fixed output voltages are available across the range of 1.2V to 3.3V in 0.1V steps.
What maximum input voltage can it sustain?
The absolute maximum rating for the Supply Input Voltage (VIN) is 7V.