RT9041A/B
®
DS9041A/B-04 November 2014 www.richtek.com
1
©
Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Pin Configurations
Ordering Information
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
(TOP VIEW)
RT9041B
RT9041A
SOT-23-6
General Description
The RT9041A/B are low voltage, low dropout linear
regulators with an external bias supply input. The bias
supply drives the gate of the internal N-Channel pass
transistor, making these devices ideal for applications that
require low voltage outputs from low voltage inputs.
RT9041A and RT9041B provide the fixed version from 1V
to 2V with 0.1V increment. Besides, RT9041B provides
more feature by using external resistors as adjustable
output voltage. The RT9041A/B include a current limit and
thermal shutdown that protects the regulator in the event
of a fault condition.
The RT9041A/B is available in a SOT-23-6 package.
Features
±±
±±
±2% Output Voltage Accuracy
No Minimum Load Current Required
1V to 5.5V Input Supply Voltage
3V to 5.5V Input Bias Supply Voltage
PGOOD Open-Drain Output (RT9041A)
Support both Fixed/Adjustable Mode (RT9041B)
Low Supply Current
5
μμ
μμ
μA (max) Shutdown Supply Current
RoHS Compliant and Halogen Free
Applications
Notebook Computers
VID Power Supplies
PDAs
Cell Phones
Low Dropout Regulators with External Bias Supply
VDD
GND
EN
VIN
VOUT PGOOD
4
23
56
VDD
GND
EN
VIN
VOUT ADJ
4
23
56
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Package Type
E : SOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
RT9041
Output Voltage
Fixed Only (RT9041A)
Fixed & Adjustable (RT9041B)
10 : 1.0V/Adj
11 : 1.1V/Adj
:
19 :1.9V/Adj
20 : 2.0V/Adj
A : Fixed with PGOOD
B : Fixed/Adjustable
-
500mA, Low Voltage, LDO Regulator with External Bias
Supply
