®
RT9361A/B
Tiny Package, High Performance, Regulated Charge Pump
General Description
The RT9361A/B is a
high performance charge pump
DC/DC converter that produces a regulated 4.5V and 5V
output. No external inductor is required for operation. The
operating voltage range is 2.8V to V
OUT
. Internal soft-start
circuitry effectively reduces the in-rush current both while
start-up and mode change.
The RT9361A/B
features very low quiescent current, over
current protection and short circuit protection.
The RT9361A/B is available in WDFN-6L 2x2, SOT-23-6
and TSOT-23-6 package.
Features
Input Voltage Range : 2.8V to V
OUT
Internal Soft Start Function
5V/4.5V Fixed Output Voltage
Over Current Protection Function
Short Circuit Protection Function
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Mobile phone, Smart Phone LED Backlight
Camera Flash White LED
LCD Display Supply
Ordering Information
RT9361A/B
Package Type
E : SOT-23-6
J6 : TSOT-23-6
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Output Voltage
A : 5V
B : 4.5V
Note :
Richtek products are :
½
Pin Configurations
(TOP VIEW)
CP VIN CN
6
5
2
4
3
VOUT GND EN
SOT-23-6/TSOT-23-6
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.
CP
VIN
CN
1
2
3
7
6
5
4
VOUT
GND
EN
WDFN-6L 2x2
½
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9361A/B-14 May 2015
www.richtek.com
1
®
RT9361A/B
RT9361APJ6
AK- : Product Code
AK-DNN
Marking Information
RT9361AGJ6
AK= : Product Code
AK=DNN
DNN : Date Code
DNN : Date Code
RT9361AGE
D3= : Product Code
D3=DNN
RT9361APE
D3- : Product Code
D3-DNN
DNN : Date Code
DNN : Date Code
RT9361AGQW
F8 : Product Code
RT9361BPJ6
AL- : Product Code
AL-DNN
F8W
W : Date Code
DNN : Date Code
RT9361BGE
D4= : Product Code
D4=DNN
RT9361BPE
D4- : Product Code
D4-DNN
DNN : Date Code
DNN : Date Code
Typical Application Circuit
C
PUMP
6
5
VIN
V
IN
+
C
IN
CP
4
VOUT
1
CN
RT9361A/B
3
EN
GND
C
OUT
R
LED
R
R
2.8V to V
OUT
2
LED LED
Part No.
RT9361A
RT9361B
Application Configuration
I
OUT
< 60mA @ V
IN
> 3.2V,
I
OUT
< 110mA @ V
IN
> 3.2V,
I
OUT
< 80mA @ V
IN
> 3.2V,
I
OUT
< 150mA @ V
IN
> 3.2V,
C
IN
(μF)
1 or 2.2
10
1 or 2.2
10
C
PUMP
(μF)
0.22
1
0.22
1
C
OUT
(μF)
1 or 2.2
10
1 or 2.2
10
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9361A/B-14 May 2015
www.richtek.com
2
RT9361A/B
Functional Pin Description
Pin Number
T/SOT-23-6
1
2
3
4
5
6
WDFN-6L 2x2
6
Pin Name
VOUT
Output Voltage
Ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Chip Enable (Active High)
Flying Capacitor Negative Terminal
Power Input Voltage
Flying Capacitor Positive Terminal
Pin Function
5,
GND
Exposed Pad (7)
4
3
2
1
EN
CN
VIN
CP
Function Block Diagram
CP CN
V
IN
V
OUT
+
EN
1MHz
OSC
Load
Disconnect
Voltage
Reference
-
V
REF
GND
Current
Bias
Short
Circuit
Protection
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9361A/B-14 May 2015
www.richtek.com
3
RT9361A/B
Absolute Maximum Ratings
(Note 1)
−0.3V
to 6V
−0.3V
to 6V
0.4W
0.606W
250°C/W
Supply Input Voltage ------------------------------------------------------------------------------------------------------
Other I/O Pin Voltages ---------------------------------------------------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
T/SOT-23-6 ------------------------------------------------------------------------------------------------------------------
WDFN-6L 2x2 --------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
T/SOT-23-6,
θ
JA
------------------------------------------------------------------------------------------------------------
WDFN-6L 2x2,
θ
JA
--------------------------------------------------------------------------------------------------------- 165°C/W
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Storage Temperature Range --------------------------------------------------------------------------------------------
−65°C
to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions
(Note 4)
Ambient Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 85°C
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 125°C
Electrical Characteristics
(V
IN
= 3.7V, T
A
= 25° C, unless otherwise specified)
Parameter
Operation Voltage Range
Symbol
V
IN
V
OUT
= 5V
Test Conditions
Min
2.8
4.83
4.8
4.32
--
110
150
250
--
Typ
--
5
5
4.5
2
--
--
350
60
30
0.1
1
--
--
Max
V
OUT
5.2
5.2
4.68
4
--
--
500
90
--
1
1.3
--
0.4
Unit
V
V
V
V
mA
mA
mA
mA
mV
μA
MHz
V
V
RT9361A , V
IN
= 3.17V to 3.43V,
I
OUT
55mA
Output Voltage
V
OUT
RT9361A , V
IN
> 3.2V, I
OUT
< 110mA
RT9361B , V
IN
> 3.2V, I
OUT
< 150mA
Quiescent Current
Maximum Output Current
OCP
Short Circuit Current
Output Ripple
Shut Down Current
Operation Frequency
Digital Input High Level
Digital Input Low Level
I
SHDN
F
OSC
V
IH
V
IL
I
OUT
= 60mA, C
OUT
= 2.2μF
V
IN
= 4.5V, V
EN
< 0.4V
I
Q
I
OUT
I
OCP
I
OUT
= 0
RT9361A , V
IN
> 3.2V, C
PUMP
= 1μF
RT9361B , V
IN
> 3.2V, C
PUMP
= 1μF
--
--
0.8
1.5
--
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9361A/B-14 May 2015
®
RT9361A/B
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.
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9361A/B-14 May 2015
www.richtek.com
5
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