ISL9204 Datasheet PDF - Intersil Corporation
| Part Number | ISL9204 | |
| Description | High Input Voltage Charger | |
| Manufacturers | Intersil Corporation | |
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Data Sheet
October 4, 2005
ISL9204
FN9207.0
High Input Voltage Charger
The ISL9204 is a cost-effective, fully integrated high input
voltage single-cell Li-ion battery charger. This charger
performs the CC/CV charge function required by Li-ion
batteries. The charger accepts an input voltage up to 28V
but is disabled when the input voltage exceeds the OVP
threshold, minimum 10V, to prevent excessive power
dissipation. The 28V rating eliminates the overvoltage
protection circuit required in a low input voltage charger.
The charge current and the end-of-charge (EOC) current are
programmable with external resistors. When the battery
voltage is lower than a typical value of 2.8V, the charger
preconditions the battery with typically 17% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, an EOC indication is provided by the CHG
pin, which is an open-drain output. An internal thermal
foldback function protects the charger from any thermal
failure.
Two indication pins (PPR and CHG) allow simple interface to
a microprocessor or LEDs. When no adapter is attached or
when disabled, the charger draws less than 1µA leakage
current from the battery.
Ordering Information
PART
PART
TEMP.
PKG.
NUMBER MARKING RANGE (°C) PACKAGE DWG. #
ISL9204IRZ-T 04Z
(Note)
-40 to 85
8 Ld 2x3 DFN L8.2x3
Tape and Reel
(Pb-free)
Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations.
Intersil Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Integrated Pass Element and Current Sensor
• No External Blocking Diode Required
• Low Component Count and Cost
• 1% Voltage Accuracy
• Programmable Charge Current
• Programmable End-of-Charge Current
• Charge Current Thermal Foldback for Thermal
Protection
• Trickle Charge for Fully Discharged Batteries
• 28V Maximum Voltage for the Power Input
• Power Presence and Charge Indications
• Less than 1µA Leakage Current Off the Battery when No
Input Power Attached or Charger Disabled
• Ambient Temperature Range: -40°C to 85°C
• 2x3 DFN 8 Ld Packages
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
• PDAs
• MP3 Players
• Stand-alone Chargers
• Other Handheld Devices
Pinout
ISL9204
(8 LD 2x3 DFN)
TOP VIEW
VIN
PPR
CHG
EN
1
2
3
4
8 BAT
7 IREF
6 IMIN
5 GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
|
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ISL9204
Pin Descriptions
VIN - Power input. The absolute maximum input voltage is
28V. A 0.47µF or larger value X5R ceramic capacitor is
recommended to be placed very close to the input pin for
decoupling purpose. Additional capacitance may be required
to provide a stable input voltage.
PPR - Open-drain power presence indication. The open-
drain MOSFET turns on when the input voltage is above the
POR threshold but below the OVP threshold and off
otherwise. This pin is capable to sink 10mA (minimum)
current to drive a LED. The maximum voltage rating for this
pin is 7V. This pin is independent on the EN-pin input.
CHG - Open-drain charge indication pin. This pin outputs a
logic LOW when a charge cycle starts and turns to HIGH
when the end-of-charge (EOC) condition is qualified. This
pin is capable to sink 10mA min. current to drive an LED.
When the charger is disabled, the CHG outputs high
impedance.
EN - Enable input. This is a logic input pin to disable or
enable the charger. Drive to HIGH to disable the charger.
When this pin is driven to LOW or left floating, the charger is
enabled. This pin has an internal 200kΩ pull-down resistor.
GND - System ground.
IMIN - End-of-charge (EOC) current program pin. Connect a
resistor between this pin and the GND pin to set the EOC
Typical Application
current. The EOC current IMIN can be programmed by the
following equation:
IMIN = -R-4---I-1-M--8---I0--N--
(mA)
Where RIMIN is in kΩ. The programmable range covers 5%
(or 10mA, whichever is higher) to 50% of IREF. When
programmed to less than 5% or 10mA, the stability is not
guaranteed.
IREF - Charge-current program and monitoring pin. Connect
a resistor between this pin and the GND pin to set the
charge current limit determined by the following equation:
IREF = -R--4--I-4-R--0--E--0--F--
(mA)
Where RIREF is in kΩ. The IREF pin voltage also monitors
the actual charge current during the entire charge cycle,
including the trickle, constant-current, and constant-voltage
phases. When disabled, VIREF = 0V.
BAT - Charger output pin. Connect this pin to the battery. A
1µF or larger X5R ceramic capacitor is recommended for
decoupling and stability purposes. When the EN pin is pulled
to logic HIGH, the BAT output is disabled.
EPAD - Exposed pad. Connect as much as possible copper
to this pad either on the component layer or other layers
through thermal vias to enhance the thermal performance.
TO INPUT
C1
VIN BAT
RIREF
IREF
ISL9204
IMIN
RIMIN
TO BATTERY
R1 R2
D1 D2
C2
OFF
ON
EN
CHG
PPR
GND
FIGURE 9. TYPICAL APPLICATION CIRCUIT INTERFACING TO INDICATION LEDS
5 FN9207.0
October 4, 2005
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ISL9204 electronic component. |
| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ISL9204.PDF Datasheet ] | |
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