USER’S MANUAL
ISL9204EVAL1
Evaluation Board Application Manual
AN1206
Rev 0.00
Oct 10, 2005
Description
The ISL9204EVAL1 is an evaluation tool for the ISL9204
single-cell Li-ion battery charger. The evaluation tool
provides a complete evaluation platform addressing all
datasheet specifications and functionalities. The jumpers on
the board facilitate the programming of the charge current,
different charging conditions, and can be used to make other
necessary connections, such as current measurement.
The ISL9204 is a fully integrated single-cell Li-ion battery
charger that accepts input voltages ranging from 4.5V up to
28V. Since the cradle input is rated for 28V maximum input
voltage, the components associated with the input circuit on
the evaluation board are good for a 28V supply.
The components assembled in the center square constitute
a complete charger, indicating the space saving advantage
of the typical ISL9204 installation in space-limited
applications.
Features
• A Complete Evaluation Platform for the ISL9204 Charger
• The Center Square Suggesting the Space Saving
Advantage of the Typical Components Assembly
• Accepts Input Voltage up to 28V
• Flexible Power Connectors Each with a Hook and a
Solder Pad Providing Variety to Users
• Convenient Jumpers for Programming the Charge
Current, Charge Mode, and for Current Measurement
• 3.5 x 2.5 Square Inches Board Size Handy for Evaluation
• Six Thermal Vias in the Thermal Pad Similar to
Customers’ Thermally Enhanced Environment
• On-Board LEDs for Input PPR and CHG State Indication
What is Needed
The following instruments will be needed to perform testing:
• Power Supplies:
1) PS1: DC 30V/5A
2) PS2: DC 20V/5A
• DC Electronic Load: 20V/5A
Ordering Information
PART #
ISL9204EVAL1
DESCRIPTION
Evaluation Board for ISL9204
Pinout
VIN
PPR
CHG
EN
1
2
3
4
8
7
6
5
BAT
IREF
IMIN
GND
• Multimeters
• Function Generator
• Oscilloscope
• Cables and Wires
AN1206 Rev 0.00
Oct 10, 2005
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ISL9204EVAL1
Quick Setup Guide (Refer to Figure 1)
DO NOT APPLY POWER UNTIL STEP 5
Step 1:
Step 2:
Step 3:
Connect a 5V supply PS1 to VIN with the current
limit set at 1.2A
Connect a 3.7V supply PS2 to VBAT with the
current limit set at 1.2A
Connect the DC electronic load of 1.0A to BAT
Step 4:
Step 5:
Step 6:
Step 7:
Step 8:
Step 9:
Verify that jumper shunts JP5 and JP7 are not
inserted
Turn on Power Supplies and DC electronic load
The green LED should be on, indicating normal
charging operation
The current meter I2 in series with PS2 should
read about 70mA as the charging current
Insert a jumper shunt on JP5 and the current
meter I2 should read about 140mA
Insert a jumper shunt on both JP5 and JP7 and
the current meter I2 should read about 210mA
FIGURE 1. CONNECTION OF INSTRUMENTS
AN1206 Rev 0.00
Oct 10, 2005
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ISL9204EVAL1
Detailed Description
The ISL9204EVAL1 is a complete evaluation platform
addressing all datasheet specifications and functionalities.
The jumpers on the board facilitate the programming of the
charge current, different charging conditions, and can be
used to make other necessary connections, such as current
measurement.
JP4 -
Parallels an additional 274k resistor to the IMIN pin,
such that the End-of-Charge Current will be increased to
30mA (R
IMIN
is 274k and the EOC current is 15mA without
the shunt).
JP5 -
Parallels an additional 59k resistor to the IREF pin,
such that the Cradle charge current will be increased by
70mA (R
IREF
is 59k and the charge current is 70mA if the
shunts on both JP5 and JP7 are removed).
JP6 -
A shunt installed on JP6 connects the BAT pin to the
output connector J2 if output current measurement is not
needed. The shunt can be replaced by a current meter if
output current measurement is needed.
JP7 -
Parallels an additional 59k resistor to the IREF pin,
such that the Cradle charge current will be increased by
another 70mA.
TABLE 1. JUMPER SETTINGS
JUMPER
POSITION
EN = HIGH
JP1
EN = GND
FUNCTION
Charger disabled
Charger enabled
Jumpers
JP1 -
Connects the EN pin to a pull-up voltage or GND. The
pull-up voltage is either the BAT voltage (when a shunt is
installed on JP3) an external 3.3V power source (when the
shunt on JP3 is removed and a +3.3V supply is connected to
the upper pin of JP3). If there is no shunt installed on JP1,
the EN pin is internally pulled down to logic LOW, which
enables the charger. If a shunt is installed across the two
jumper pins labeled as “Enable”, the EN pin is driven to logic
LOW, the charger is enabled, same as floating. If the shunt
is installed across the two jumper pins labeled as “Disable”
and the pull-up voltage is above 2V, the EN pin is driven to
logic HIGH, which disables the charger.
JP2 -
A shunt installed on JP2 connects the input source
from connector J1 to the circuit if input current measurement
is not needed. The shunt can be replaced by a current meter
if input current measurement is needed.
JP3 -
Selects the power source for logic pull-up and the
LEDs supply. If a shunt is installed, the BAT voltage is
selected as the power source. If the shunt is removed, an
external power supply of +3.3V can be connected from the
upper pin to GND to provide the pull-up and LEDs supply.
This purpose is to exclude the extra current through the
charger when characterizing small currents such as EOC
and quiescent currents.
Shunt not installed Charger enabled
JP2
JP3
JP4
JP5
JP6
JP7
Shunt installed
Shunt installed
Shunt installed
Shunt installed
Shunt installed
Shunt installed
Connect input source to VIN
Select BAT as the pull-up source
Set EOC current to 30mA
Add 70mA to charging current
Connects BAT to J2
Add 70mA to charging current
AN1206 Rev 0.00
Oct 10, 2005
Page 3 of 8
ISL9204EVAL1
Board Layout Information
Schematic of PCB Board
VIN GND1
GND2
V_BAT
J1
1
1
2
JP2
2
C1
4.7µF
1
JP3
2
C2
EN CHG PPR
R1
470
R2
470
0.1µF
1
2
3
4
U1
VIN
PPR
CHG
EN
BAT
IREF
IMIN
GND
C4
IMIN
1µF
8
7
6
5
2
JP4
1
R3
274K
R4
59K
R5
274K
1
2
C3
10µF
C5
47µF
C6
47µF
C7
47µF
1
JP6
2
2
1
J2
C8
1µF
D1
GREEN
D2
RED
IREF
2
JP5
1
R6
59K
R7
59K
JP7
DFN/2x3/ISL9204
DISABLE
JP1
123
ENABLE
FIGURE 2. SCHEMATIC
AN1206 Rev 0.00
Oct 10, 2005
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ISL9204EVAL1
TABLE 2. ISL9204EVAL1 BILL OF MATERIALS (BOM)
ITEM
1
2
3
4
5
6
8
9
10
11
12
13
14
15
16
17
18
19
20
QTY
1
2
1
1
1
1
1
1
1
2
3
2
3
5
3
5
2
1
1
REFERENCE
U1
R1, R2
R3
R4
R5
R6
C1
C2
C3
C4, C8
C5, C6, C7
J1, J2
VIN, VBAT
PART DESCRIPTION
ISL9204 Charger
470, 5%, 1/8W Resistor
274k, 1%, 1/16W Resistor
59k,1%, 1/16W Resistor
274k, 1%, 1/8W Resistor
59k, 1% 1/8W Resistor
4.7µF, 35V, Tantalum
0.1µF, 50V, X7R Ceramic
10µF, 6.3V, Tantalum
1.0µF, 6.3V, X5R Ceramic
47µF, 6.3V, X5R Ceramic
2.54mm Center Header, 2 CKT
Test point, Red
0603
0603
0603
1210
PCB
FOOTPRINT
2x3 DFN
0805
0402
0402
0805
0805
PART NUMBER
ISL9204
ERJ-6GEYJ471V
ERJ-2RKF2743X
ERJ-2RKF5902X
ERJ-6ENF2743V
ERJ-6ENF5902V
ECS-T1VC475R
C1608X7R1H104K
ECS-T0JY106R
ECJ-1VB0J105K
ECJ-4YB0J476M
22-11-2022
5010
5014
5011
22-28-4020
22-28-4030
0805
0805
SML-LXT0805GW-TR
SML-LXT0805IW-TR
VENDOR
Intersil
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
TDK
Panasonic
Panasonic
Panasonic
Molex
Keystone
Keystone
Keystone
Molex
Molex
Lumex Opto
Lumer Opto
EN, CHG, PPR, IREF, IMIN Test point, Yellow
GND1, GND2, GND3
JP2, JP3, JP4, JP5, JP6
JP1
D1
D2
Test point, Black
2.54mm header, 2ckt
2.54mm header, 3ckt
Green LED
Red LED
AN1206 Rev 0.00
Oct 10, 2005
Page 5 of 8
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