®
RT9193
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
General Description
The RT9193 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9193 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 RT9193 also works with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications, critical in hand-held wireless
devices. The RT9193 consumes less than 0.01μA in
shutdown mode and has fast turn-on time less than 50μs.
The other features include ultra low dropout voltage, high
output accuracy, current limiting protection, and high ripple
rejection ratio. Available in the SC-70-5, SOT-23-5,
TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages.
Features
Ultra Low Noise for RF Application
Ultra Fast Response in Line/Load Transient
Quick Start-Up (Typically 50μs)
μ
<0.01μA Standby Current When Shutdown
μ
Low Dropout : 220mV @ 300mA
Wide Operating Voltage Ranges : 2.5V to 5.5V
TTL-Logic-Controlled Shutdown Input
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
Only 1μF Output Capacitor Required for Stability
μ
High Power Supply Rejection Ratio
Custom Voltage Available
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Ordering Information
RT9193-
Package Type
U5 : SC-70-5
B : SOT-23-5
J5 : TSOT-23-5
QW : WDFN-6L 2x2 (W-Type)
F : MSOP-8
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
15 : 1.5V
16 : 1.6V
:
49 : 4.9V
50 : 5.0V
1H : 1.85V
2H : 2.85V
4G : 4.75V
(1.5V to 5V with 0.1V step is available)
Note :
Richtek products are :
½
CDMA/GSM Cellular Handsets
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
Portable Information Appliances
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Typical Application Circuit
RT9193
V
IN
C
IN
1µF/X7R
GND
Chip Enable
EN
BP
C
BP
22nF
(Option for low noise)
VIN
VOUT
C
OUT
1µF/X7R
V
OUT
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.
½
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9193-17 January 2016
www.richtek.com
1
RT9193
Pin Configurations
(TOP VIEW)
VOUT
5
BP
4
2
3
EN
GND
VIN
1
2
3
7
6
5
4
BP
NC
VOUT
NC
VIN
NC
VOUT
8
2
3
4
7
6
5
NC
EN
BP
GND
VIN GND EN
WDFN-6L 2x2
MSOP-8
SC-70-5/SOT-23-5/TSOT-23-5
Functional Pin Description
Pin Name
EN
BP
GND
VOUT
VIN
Pin Function
Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100k
resistor connected to GND when the control signal is floating.
Reference Noise Bypass. This pin can be floating. For lowest noise performance, connect a 22nF
capacitor between the BP and GND pins.
Ground.
Output Voltage.
Power Input Voltage.
Function Block Diagram
EN
Quick
Start
BP
V
REF
+
-
Error
Amplifier
Shutdown
and
Logic Control
VIN
MOSFET
Driver
VOUT
Current-Limit
and
Thermal
Protection
GND
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS9193-17 January 2016
RT9193
Absolute Maximum Ratings
(Note 1)
6V
300mW
400mW
606mW
625mW
Supply Input Voltage ------------------------------------------------------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
SC-70-5 ----------------------------------------------------------------------------------------------------------------------
TSOT-23-5/SOT-23-5 ------------------------------------------------------------------------------------------------------
WDFN-6L 2x2 --------------------------------------------------------------------------------------------------------------
MSOP-8 ---------------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
SC-70-5,
θ
JA
---------------------------------------------------------------------------------------------------------------- 333°C/W
SC-70-5,
θ
JC
---------------------------------------------------------------------------------------------------------------- 200°C/W
TSOT-23-5/SOT-23-5,
θ
JA
------------------------------------------------------------------------------------------------ 250°C/W
TSOT-23-5/SOT-23-5,
θ
JC
----------------------------------------------------------------------------------------------- 25°C/W
WDFN-6L 2x2,
θ
JA
--------------------------------------------------------------------------------------------------------- 165°C/W
WDFN-6L 2x2,
θ
JC
-------------------------------------------------------------------------------------------------------- 20°C/W
MSOP-8
θ
JA
---------------------------------------------------------------------------------------------------------------- 160°C/W
MSOP-8
θ
JC
---------------------------------------------------------------------------------------------------------------- 55°C/W
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------
Storage Temperature Range --------------------------------------------------------------------------------------------
ESD Susceptibility (Note 3)
HBM (Human Body Model) ----------------------------------------------------------------------------------------------
MM (Machine Model) -----------------------------------------------------------------------------------------------------
(Note 4)
2.5V to 5.5V
0V to 5.5V
−40°C
to 125°C
−40°C
to 85°C
260°C
−65°C
to 150°C
2kV
200V
Recommended Operating Conditions
Supply Input Voltage ------------------------------------------------------------------------------------------------------
EN Input Voltage -----------------------------------------------------------------------------------------------------------
Junction Temperature Range --------------------------------------------------------------------------------------------
Ambient Temperature Range --------------------------------------------------------------------------------------------
Electrical Characteristics
(V
IN
= V
OUT
+ 1V, C
IN
= C
OUT
= 1μF, C
BP
= 22nF, T
A
= 25° C, unless otherwise specified)
Parameter
Output Voltage Accuracy
Current Limit
Quiescent Current
Dropout Voltage
(Note 5)
Symbol
V
OUT
I
LIM
I
Q
V
DROP
V
LINE
V
LOAD
I
STBY
Test Conditions
I
OUT
= 1mA
R
LOAD
= 1
V
EN
Min
2
360
--
Typ
--
400
90
170
Max
2
--
130
200
300
0.3
0.6
1
Unit
%
mA
A
mV
1.2V, I
OUT
= 0mA
I
OUT
= 200mA, V
OUT
> 2.8V
I
OUT
= 300mA, V
OUT
> 2.8V
V
IN
= (V
OUT
+ 1V) to 5.5V,
I
OUT
= 1mA
1mA
I
OUT
300mA
V
EN
= GND, Shutdown
--
--
--
--
220
--
--
0.01
Line Regulation
Load Regulation
Standby Current
%
%
A
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9193-17 January 2016
www.richtek.com
3
RT9193
Parameter
EN Input Bias Current
EN Threshold
Voltage
Output Noise Voltage
Power Supply
Rejection Rate
f = 100Hz
f = 10kHz
Logic-Low
Symbol
I
IBSD
V
IL
Logic-High V
IH
e
NO
PSRR
T
SD
TSD
Test Conditions
V
EN
= GND or VIN
V
IN
= 3V to 5.5V, Shutdown
V
IN
= 3V to 5.5V, Start-Up
10Hz to 100kHz, I
OUT
= 200mA
C
OUT
= 1F
C
OUT
= 1F, I
OUT
= 10mA
Min
--
--
1.2
--
--
--
--
--
Typ
0
--
--
100
70
50
165
30
Max
100
0.4
--
--
--
--
--
--
Unit
nA
V
V
RMS
dB
C
C
Thermal Shutdown Temperature
Thermal Shutdown Temperature
Note 1.
Stresses beyond those listed
“Absolute
Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2.
θ
JA
is measured at T
A
= 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Note 5.
The dropout voltage is defined as V
IN
−
V
OUT
, which is measured when V
OUT
is V
OUT(NORMAL)
−
100mV.
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9193-17 January 2016
RT9193
Typical Operating Characteristics
Output Voltage vs. Temperature
1.8
1.7
Quiescent Current vs. Temperature
95
90
85
80
75
70
65
60
1.6
1.5
1.4
1.3
1.2
-50
-25
0
25
50
75
100
125
Quiescent Current (µA)
RT9193-15xU5
V
IN
= 3.3V
C
IN
= C
OUT
= 1μF X7R
RT9193-15xU5
V
IN
= 3.3V
C
IN
= C
OUT
= 1μF X7R
Output Voltage (V)
-50
-25
0
25
50
75
100
125
Temperature (
C)
Temperature (°C)
Dropout Voltage vs. Load Current
300
250
200
PSRR
20
RT9193-33xB
C
IN
= C
OUT
= 1μF
T
J
= 125°C
0
V
IN
= 4V to 5V
C
IN
= C
OUT
= 1μF,
X7R
Dropout Voltage (mV)
PSRR (dB)
T
J
= 25°C
150
100
50
0
0
0.05
0.1
0.15
0.2
0.25
0.3
-20
T
J
= -40°C
-40
I
Load
= 100mA
-60
I
Load
= 10mA
-80
10
0.01
100
0.1
1K
1
10K
10
100K
100
1M
1000
Load Current (A)
Frequency (kHz)
(Hz)
EN Pin Shutdown Threshold vs. Temperature
1.75
EN Pin Shutdown Response
EN Pin Voltage
(V)
10
5
0
V
IN
= 5V
C
IN
= C
OUT
= 1μF
RT9193-28xU5
No Load
EN Pin Shutdown Threshold (V)1
1.50
RT9193-15xU5
V
IN
= 3.3V
C
IN
= C
OUT
= 1μF X7R
1.25
1.00
Output Voltage
(V)
-50
-25
0
25
50
75
100
125
2
1
0
0.75
0.50
Time (500μs/Div)
Temperature (°C)
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9193-17 January 2016
www.richtek.com
5
国产芯片交流
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
