®
RT9536H
Linear Single Cell Li-Ion Battery Charger IC for Portable
Applications
General Description
The RT9536H is a fully integrated single cell Li-ion
battery charger IC ideal for portable applications. The
RT9536H optimizes the charging task by using a control
algorithm including pre-charge mode, fast charge mode
and constant voltage mode. The input voltage range of the
VIN pin can be as high as 28V. When the input voltage
exceeds the OVP threshold, it will turn off the charging
MOSFET to avoid overheating of the chip.
In RT9536H, the maximum charging current can be
programmed with an external resistor. For USB application,
the user can set the current to 100mA/500mA through
the EN/SET pin. For the factory mode, the RT9536H can
allow 4.25V or 4.4V/2.3A power pass through to support
system operation. It also provides a 50mA LDO to support
the power of peripheral circuit. The internal thermal
feedback circuit regulates the die temperature to optimize
the charge rate for all ambient temperatures. The RT9536H
provides protection functions such as under voltage
protection, over voltage protection for VIN supply and
thermal protection for battery temperature.
The RT9536H is available in a WDFN-10L 3x2 package to
achieve optimized solution for PCB space and thermal
considerations.
Features
28V Maximum Rating for DC Adapter
Internal Integrated Power MOSFETs
Support 4.25V or 4.4V/2.3A Factory Mode
50mA Low Dropout Voltage Regulator
Status Pin Indicator
Programmed Charging Current
Under Voltage Lockout
Over Voltage Protection
Thermal Feedback Optimized Charge Rate
RoHS Compliant and Halogen Free
Applications
Cellular Phones
Digital Cameras
PDAs and Smart Phones
Portable Instruments
Marking Information
06= : Product Code
06=YM
DNN
YMDNN : Date Code
Simplified Application Circuit
Adapter or USB
C
IN
BATT
PGB
ISET
R
ISET
R
IEOC
IEOC
VIN
RT9536H
BATT
C
OUT
+
CHGSB
LDO
EN/SET
GND
BATT
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9536H-00
June 2015
www.richtek.com
P1
RT9536H
Ordering Information
RT9536H
Package Type
QW : WDFN-10L 3x2 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
½
Pin Configurations
(TOP VIEW)
VIN
ISET
GND
LDO
IEOC
1
2
3
4
5
10
9
8
7
6
11
BATT
PGB
CHGSB
GND
EN/SET
WDFN-10L 3x2
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
Functional Pin Description
Pin No.
1
2
Pin Name
VIN
ISET
Power Input.
Charging Current Setting.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
LDO Output (4.9V). This pin provides 50mA output current.
End-of-Charge Current Setting. The I
EOC
is from 5% to 5O% Ichg-fast which is
programmed by the ISET pin.
Enable and Operation Mode and V
OUT
Regulation Voltage Setting.
Indicator Output for Charging Status.
Indicator Output for Power Status.
Battery Charge Current Output.
Pin Function
3, 7,
GND
11 (Exposed Pad)
4
5
6
8
9
10
LDO
IEOC
EN/SET
CHGSB
PGB
BATT
Function Block Diagram
Switch
Well
VIN
Base
V
REF
V
DD
I
Bias
Status
Sleep
Mode
IEOC
I
EOC
Set
Block
CC/CV/TR
Multi Loop
Controller
Current
Set Block
Current
Set Block
200k
OVP
UVLO
Logic
LDO
LDO
BATT
CHGSB
PGB
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
GND
GND
ISET
EN/SET
DS9536H-00
June 2015
RT9536H
Operation
The RT9536H is designed for single cell Li-Ion battery
charger in portable applications.
Base Circuit
The Base circuit provides the internal power for VDD, V
REF
reference voltage and bias current.
Status Indicator
Power Switch with Switch Well Circuits
The main power switch between VIN and BATT is designed
to control the charge current for battery. The switch well
is designed to avoid the reverse current from battery to
input power.
Sleep Mode
When the charger is only connected to battery with no
input power, the charger will enter sleep mode and the
leakage current from battery to the charger will be less
than 10μA for low power consumption
Current Set Block
The charge current is adjustable from the ISET pin with
an external resistor between the ISET and GND. The End-
of-Charge current is also adjustable by an external resistor
connected from the IEOC pin to GND. If the charging
current is less than EOC current, the CHGSB pin will be
pulled high.
Protection
The protection circuits include OVP, UVLO and OTP. When
the protection circuit is triggered, the main power switch
will be turned of to protect the charging system.
The CHGSB and PGB pin indicate the charger and power
condition. During the charging process, the CHGSB pin
is pulled low. When the charger is under charge done
condition or abnormal condition, the CHGSB will be high
impedance. The PGB pin indicates the input power status
at VIN pin. When the input power is normal, the PGB pin
is pulled low.
Operation Mode
The RT9536H provides programmable output current mode
setting
including
USB100, USB500 and Factory mode.
The operation mode is programmable through the input
pulse number at EN/SET pin. Under the factory mode,
besides the EN/SET is also used to set regulation to be
4.25V or 4.4V. Output current is up to 2.3A.
LDO
The RT9536H provides a LDO regulator to support the
peripheral circuits. The output voltage is regulated to 4.9V
and the maximum output current is 50mA.
Multi-Loop Controller
The Multi-Loop controller controls the operation during
the charging process. The controller will make sure the
battery is well charged in a suitable current, voltage, and
die temperature.
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9536H-00
June 2015
www.richtek.com
3
RT9536H
Absolute Maximum Ratings
(Note 1)
Supply Input Voltage, VIN -----------------------------------------------------------------------------------------------
−0.3V
to 28V
Other Pins -------------------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
WDFN-10L 3x2 ------------------------------------------------------------------------------------------------------------- 2.27W
Package Thermal Resistance (Note 2)
WDFN-10L 3x2,
θ
JA
------------------------------------------------------------------------------------------------------- 44°C/W
WDFN-10L 3x2,
θ
JC
------------------------------------------------------------------------------------------------------- 11°C/W
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Storage Temperature Range --------------------------------------------------------------------------------------------
−65°C
to 150°C
(Note 3)
Recommended Operating Conditions
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 4.3V to 5.5V
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------------
−20°C
to 85°C
Electrical Characteristics
(V
IN
= 5V, V
BATT
= 4V, T
A
= 25°C, unless otherwise specified)
Parameter
VIN POR Rising Threshold
Voltage
VIN POR Threshold Voltage
Hysteresis
VIN OVP Threshold Voltage
VIN OVP Threshold Voltage
Hysteresis
VIN
VOUT
VOS Rising
VIN
VOUT VOS Falling
VIN Standby Current
VIN Supply Current
VOUT Sleep Leakage Current
VOUT Regulation
Thermal Regulation
OTP
OTP Hysteresis
PGB/CHGSB Sink Current
Pre-Charge Threshold
Fast-Charge to Pre-Charge
Deglitch Time
Symbol
V
POR
Test Conditions
Min
3.15
--
Typ
3.3
200
6.9
200
75
32
250
1
1
4.25
4.4
125
155
20
--
2.5
2.6
25
Max
3.45
300
7.1
300
150
--
300
2
10
4.313
4.444
--
--
--
--
2.6
2.7
--
Unit
V
mV
V
mV
mV
mV
A
mA
A
V
C
C
C
mA
V
ms
V
OVP
6.7
--
--
18
V
BATT
= 4.5V, EN/SET = High
V
BATT
= 4.5V, EN/SET = Low
--
--
--
V
CV
0C to 85C, I
LOAD
= 0mA
4.186
4.356
--
--
--
20
V
OUT
Rising; V
CV
= 4.25V
V
OUT
Rising; V
CV
= 4.4V
2.4
2.5
--
Copyright
©
2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9536H-00
June 2015
RT9536H
Parameter
Pre-Charge Current
End of Charge Current (EOC)
IEOC Setting Current
IEOC Setting K
EOC
VIN Power FET R
DS(ON)
ISET Set Voltage
ISET Short Protect Threshold
ISET Short Protect Deglitch
Time
ISET Short Protect Maximum
Current
As ISET Mode, R
ISET
= 530
VIN Charge Current
EN/SET Pull Low Resistor
EN/SET Voltage
LDO On-Resistance
LDO Output Voltage
LDO Maximum Output Current
Factory Mode V
OUT
Factory Mode Maximum Output
Current
EN/SET Off Time
EN/SET Lock Time
EN/SET Duration
EN/SET Set Time
Logic-High
Logic-Low
Timer to set V
CV
= 4.4V
Timer to disable chip
Timer to lock pulse count
V
CV
= 4.25V
V
CV
= 4.4V
Logic-High
Logic-Low
V
IH
V
IL
R
DS(ON)
V
LDO
4.75
60
4.165
4.312
2.3
2
1.5
100
100
750
I
CHRG
As USB100 Mode
As USB500 Mode
V
ISET
I
EOC
I
OUT
= 1A
Symbol
I
PRECHG
Test Conditions
USB100 Mode
USB500 Mode or ISET Mode,
ratio of fast-charge current
Min
90
15
--
70
180
--
--
320
--
--
0.9
90
380
--
1.4
--
Typ
95
20
R
EOC
/
K
EOC
75
200
280
1.5
--
1.5
2
1
95
395
200
--
--
3
4.9
120
4.25
4.4
--
--
--
--
--
--
Max
100
25
--
80
220
512
--
460
--
--
1.1
100
415
--
--
0.4
6
5.05
180
4.335
4.488
--
--
--
700
700
1000
Unit
mA
%
%
A
/%
mV
V
ms
A
A
mA
mA
k
V
V
mA
V
A
ms
ms
s
s
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 high effective thermal conductivity four-layer test board per JEDEC 51-7.
θ
JC
is
measured at the exposed pad of the package.
Note 3.
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.
DS9536H-00
June 2015
www.richtek.com
5
京公网安备 11010802033920号
EEWORLD
