RT9536HGQW
Evaluation Board
your power partner.
Linear Single Cell Li-Ion Battery Charger IC for Portable
Applications
Purpose
The RT9536H is a fully integrated single cell Li-ion battery charger IC ideal for portable applications. This document
explains the function and use of the RT9536H evaluation board (EVB), and provides information to enable operation,
modification of the evaluation board and circuit to suit individual requirements.
Table of Contents
Purpose ................................................................................................................................................................. 1
Introduction............................................................................................................................................................ 2
Key Performance Summary Table .......................................................................................................................... 2
Bench Test Setup Conditions ................................................................................................................................. 3
Schematic, Bill of Materials & Board Layout ........................................................................................................... 5
More Information.................................................................................................................................................... 6
Important Notice for Richtek Evaluation Board ....................................................................................................... 7
EVB_RT9536HGQW-00
January 2016
1
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RT9536HGQW
Evaluation Board
your power partner.
Introduction
General Product Information
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.
Product Feature
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
Programmer Charging Current
Under Voltage Lockout
Over Voltage Protection
Thermal Feedback Optimized Charge Rate
RoHS Compliant and Halogen Free
Key Performance Summary Table
Key Features
Evaluation Board Number : PCB053_V1
Default Input Voltage
5V
Max Output Current
1.2A
Default Output Voltage
4.25V
Default Marking & Package Type
RT9536HGQW, WDFN-10L 3x2
EVB_RT9536HGQW-00
January 2016
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RT9536HGQW
Evaluation Board
your power partner.
Bench Test Setup Conditions
Headers Description and Placement
Please carefully inspect the EVB IC and external components, comparing them to the following Bill of Materials, to ensure that all components are
installed and undamaged. If any components are missing or damaged during transportation, please contact the distributor or send e-mail to
evb_service@richtek.com.
Test Points
The EVB is provided with the test points and pin names listed in the table below.
Test point/
Pin name
VIN
Input voltage
Power input. Support 4.75V to 5.5V Input Voltage.
GND
Ground
Ground.
LDO
LDO output
LDO Output (4.9V). This pin provides 50mA output current.
CHGSB
Indicator Output for Charging
Status
The CHGSB pin indicate the charger status. 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.
PGB
Indicator
Status
The PGB pin indicates the input power status at VIN pin. When
the input power is normal, the PGB pin is pulled low.
BATT
Batttery Charge Current Output
Charger output for battery.
ENB
Enable Control Input
Enable and Operation Mode and VOUT Regulation Voltage
Setting.
Signal
EVB_RT9536HGQW-00
Output
January 2016
Comment (expected waveforms or voltage levels on test points)
for
Power
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RT9536HGQW
Evaluation Board
your power partner.
Power-up & Measurement Procedure
1. Connect input power (4.75V < VIN < 5.5V) to VIN test pin.
2. Connect one cell li-ion battery positive and negative terminals to BATT and GND test pin.
3. Pull low to ENB test pin.
4. Verify the LED1 and LED2 whether to light and get charger status.
5. Measure output voltage (approximately 0~4.25V) between BATT and GND.
Specification
Parameter
Battery Voltage Regulation
Symbol
(CV = 4.25V)
(CV = 4.4V)
VREG
(ISET Mode)
VIN Charge Setting Range
(USB100)
ICHG
(USB500)
Over Voltage Protection
EVB_RT9536HGQW-00
January 2016
VOVP
4
Min
Typ
Max
Units
4.186
4.25
4.313
4.356
4.4
4.444
0.9
1
1.1
A
90
95
100
mA
380
395
410
mA
6.7
6.9
7.1
V
V
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RT9536HGQW
Evaluation Board
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Schematic, Bill of Materials & Board Layout
EVB Schematic Diagram
Bill of Materials
Reference
Qty
Part Number
Description
Package
Manufacture
U1
1
RT9536HGQW
Battery Charge IC
WDFN-10L 3x2
RICHTEK
C2, C3, C6
3
C0603X5R1E225DT
1µF/25V/X5R
0603
TDK
LED1, LED2
2
DIP LED
LED_Red
DIP
R10, R11
2
RC0603FR
300Ω/0603
0603
VR1, VR2
2
5kΩ (可變電阻)
C1, C4, C5, C7
4
NC
0603
R9, R12, R13, R14
4
NC
0603
D1, M1
2
NC
EVB_RT9536HGQW-00
January 2016
5
YAGEO
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RT9536HGQW
Evaluation Board
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PCB Layout
Top View
Bottom View
EVB_RT9536HGQW-00
January 2016
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RT9536HGQW
Evaluation Board
your power partner.
More Information
For more information, please find the related datasheet or application notes from Richtek website
http://www.richtek.com.
Important Notice for Richtek Evaluation Board
THIS DOCUMENT IS FOR REFERENCE ONLY, NOTHING CONTAINED IN THIS DOCUMENT SHALL BE CONSTRUED AS RICHTEK’S WARRANTY, EXPRESS
OR IMPLIED, UNDER CONTRACT, TORT OR STATUTORY, WITH RESPECT TO THE PRESENTATION HEREIN. IN NO EVENT SHALL RICHTEK BE LIABLE TO
BUYER OR USER FOR ANY AND ALL DAMAGES INCLUDING WITHOUT LIMITATION TO DIRECT, INDIRECT, SPECIAL, PUNITIVE OR CONSEQUENTIAL
DAMAGES.
EVB_RT9536HGQW-00
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