RT9193T Datasheet, PDF (1/12 Pages) Richtek Technology Corporation – 300mA, Thermal Folded Back CMOS LDO Regulator

RT9193T
300mA, Thermal Folded Back CMOS LDO Regulator
General Description
Features
The RT9193T is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9193T performance is optimized for
battery-powered systems to deliver ultra low noise and
low quiescent current. A noise bypass pin is available for
further reduction of output noise. Regulator ground current
increases only slightly in dropout, further prolonging the
battery life. The RT9193T also works with low-ESR
ceramic capacitors, reducing the amount of board space
necessary for power applications, critical in hand-held
wireless devices. The RT9193T consumes less than 0.01μA
in shutdown mode and has fast turn-on time less than
50μs. RT9193T is short circuit thermal folded back
protected. RT9193T lowers its OTP trip point from 165°C
to 110°C when output short circuit occurs (V_OUT < 0.4V)
z Short Circuit Thermal Folded Back Protection
z Ultra-Low-Noise for RF Application
z Ultra-Fast Response in Line/Load Transient
z Quick Start-Up (Typically 50us)
z < 0.01uA Standby Current When Shutdown
z Low Dropout : 220mV @ 300mA
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
z Current Limiting Protection
z Thermal Shutdown Protection
z Only 1uF Output Capacitor Required for Stability
z High Power Supply Rejection Ratio
z Custom Voltage Available
z RoHS Compliant and 100% Lead (Pb)-Free
providing maximum safety to end users. The other features
include ultra low dropout voltage, high output accuracy,
Applications
current limiting protection, and high ripple rejection ratio. z CDMA/GSM Cellular Handsets
Available in the 5-lead of SC-70, SOT-23 and z Battery-Powered Equipment
WDFN-6L 2x2 packages.
z Laptop, Palmtops, Notebook Computers
Ordering Information
RT9193T-
Package Type
U5 : SC-70-5
B : SOT-23-5
QW : WDFN-6L 2x2 (W-Type)
z Hand-Held Instruments
z PCMCIA Cards
z Portable Information Appliances
Marking Information
For marking information, contact our sales representative
Lead Plating System
directly or through a Richtek distributor located in your
P : Pb Free
area.
G : Green (Halogen Free and Pb Free)
Note :
Output Voltage
15 : 1.5V
16 : 1.6V
:
34 : 3.4V
35 : 3.5V
1H : 1.85V
2H : 2.85V
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.
Pin Configurations
(TOP VIEW)
EN 1
GND 2
VIN 3
6 BP
5 NC
7 _{4 VOUT}
WDFN-6L 2x2
VOUT
BP
5
4
2
3
VIN GND EN
SC-70-5/SOT-23-5
DS9193T-06 April 2011
www.richtek.com
1