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PDF ISL9301 Data sheet ( Hoja de datos )
| Número de pieza | ISL9301 | |
| Descripción | High Input Voltage Charger | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Data Sheet
February 25, 2008
ISL9301
FN6435.0
High Input Voltage Charger With Power
Path Management
The ISL9301 is a fully integrated high input voltage
single-cell Li-ion battery charger with power path
management function. 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 10.5V OVP threshold. The 28V rating
eliminates the overvoltage protection circuit required in a
low-voltage charger. The charge current and the
end-of-charge (EOC) current are programmable with
external resistors. When the battery voltage is lower than
2.8V, the charger preconditions the battery with 16% of the
programmed charge current. When the charge current
reduces to the programmable EOC current level during the
CV charge phase, the EOC indicator (CHG) will toggle to
logic LOW to indicate the end-of-charge condition. The
charger will continue to charge until the user programmed
timeout interval has elapsed, then the charger is terminated.
The ISL9301 uses separate power paths to supply the
system load and charge the battery. This feature allows the
system to immediately operate with a completely discharged
battery. This feature also allows the charge to terminate
when the battery is full while continuing to supply the system
with the input source, thus minimizing unnecessary
charge/discharge cycles and improving the battery life.
Two indication pins (PPR and CHG) allow simple interface to
a microprocessor or LEDs.
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL9301IRZ 9301
-40 to +85 10 Ld 3X3 DFN L10.3X3C
ISL9301IRZ-T 9301
-40 to +85 10 Ld 3X3 DFN L10.3X3C
* Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is 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
• Power Path Management Optimize Charge and System
Currents
• Intelligent Timeout Interval Based on Actual Charge
Current
• Integrated Disconnect Switch to Disconnect the Battery
• 1% Charger Output 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 at VIN pin
• Power Presence and Charge Indications
• Ambient Temperature Range: -40°C to +85°C
• 10 Ld 3x3 DFN Package
• Pb-Free (RoHS Compliant)
Applications
• Mobile Phones
• Blue-Tooth Devices
• PDAs
• MP3 Players
• Stand-Alone Chargers
• Other Handheld Devices
Pinout
ISL9301
(10 LD DFN)
TOP VIEW
VIN 1
VBAT 2
PPR 3
CHG 4
TIME 5
10 VOUT
9 BATON
8 IREF
7 IMIN
6 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. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
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ISL9301
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 Equation 4:
IREF
=
---3---8---8----6----
RIREF
(mA)
(EQ. 4)
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.
BATON - Battery disconnect pin. The BATON pin is a logic
input pin to allow the disconnection of the battery from the
system to eliminate the unwanted drainage current from the
battery. There is an internal 1MΩ pull-down resistor at this
pin. Drive to HIGH to connect the battery to the system.
When this pin is driven to LOW or left floating, the battery is
disconnected from the system.
VOUT - Output connection to the system. This pin provides
a 4.5V regulated voltage for the system when a valid input
power is present. If no valid input is present, and BATON is
driven HI, the VOUT pin is connected to VBAT through an
internal MOSFET. If no valid input is present and BATON is
LOW, the voltage at VOUT pin is zero. A 4.7µF or larger X5R
ceramic capacitor is recommended for decoupling and
stability purposes.
EPAD - Exposed pad. Connect as much copper as possible
to this pad either on the component layer or other layers
through thermal vias to enhance the thermal performance.
Trickle
4.2V
IREF
CC
2.8V
16%IREF
Timeout
CV
Charge
Voltage
Charge
Current
IMIN
VREC
CHG
CHG
Indication
TIME
FIGURE 1. TYPICAL CHARGING CYCLE
5
FN6435.0
February 25, 2008
5 Page 
www.datasheet4u.com
Power
Up
N
VIN>VPO R ?
Y
N
VIN<VO VP?
Y
POR
N
VIN>VO UT +VO S?
Y
In itia liz a tio n
R eset Tim er
V B A T >V MIN
N
TRICKLE CHARG E
PPR = L
CHG = L
VO UT = 4.5V
Charger = O N
Y
ISL9301
Y
IO UT >ILIM ?
N
BATT DISCHARG E
VOUT = ON
IC HG = -(IO U T – ILIM )
Charger = Reversed
CHG = HI
Tim er R eset
IREF+IO UT
> ILIM ?
N
FAST CHARGE
VOUT = ON
ICHG = IREF
Charger = ON
CHG = LO
Y
PPM
VOUT = ON
ICHG = (ILIM – IO UT)
Charger = ON
CHG = LO
N VBAT =
4 .2 V ?
Y
CV CHARGE
VOUT = ON
Charger = ON
CHG = LO
Y
Tim eout?
CHARGER FAULT
VOUT = ON
Charger = OFF
C H G = B linking
Power down
To Power Up
N
ICHG < IM IN?
Y
N
CHARGE COMPLETE
VOUT = ON
Charger = ON
CHG = HI
Anytim e D ie
tem perature exceeds
142 oC
OTP
VOUT = VBAT
Charger = OFF
CHG = HI
Tim eout?
N
Y
D IS A B L E D
VOUT = ON
Charger = OFF
CHG = HI
T die < 1 1 0 oC ?
Y
N
VOUT <
VRECH?
Y
N
FIGURE 6. STATE DIAGRAM
11 FN6435.0
February 25, 2008
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ISL9301.PDF ] | |
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