ISL6292BCRZ-T Intersil, ISL6292BCRZ-T Datasheet

IC CHARGER LI-ION POLYMER 16-QFN

ISL6292BCRZ-T

Manufacturer Part Number
ISL6292BCRZ-T
Description
IC CHARGER LI-ION POLYMER 16-QFN
Manufacturer
Intersil
Datasheet

Specifications of ISL6292BCRZ-T

Function
Charge Management
Battery Type
Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
Voltage - Supply
4.3 V ~ 6.5 V
Operating Temperature
-20°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ISL6292BCRZ-TTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ISL6292BCRZ-T
Quantity:
830
Li-ion/Li Polymer Battery Charger
The ISL6292B uses Intersil’s patent-pending dual-mode
charge technology to minimize the heat in a linear charger.
The ISL6292B is a modification of the original ISL6292 and
is optimized for cellular phone travel charger applications.
The low-heat generation feature of the dual-mode charger
enables the charger IC to be placed inside the connector of
the travel charger to completely remove the influence of the
adapter cable on the charging performance.
Working with a current-limited ac/dc converter, the dual-
mode charger charges a Li-ion battery with the same current
profile as a traditional linear charger. The constant charge
current is determined by the current limit of the ac/dc
converter. The constant output voltage is fixed at 4.2V. When
the battery voltage is below 2.8V, the charger preconditions
the battery with a low trickle-charge current. The charge
status is indicated by a tri-color LED. A safety timer prevents
charging a dead battery for an excessively long period.
The ISL6292B also features a thermal foldback function that
automatically reduces the charge current when the internal
die temperature exceeds a 100°C limit to prevent further
temperature rise. This function removes the concern of
thermal failure in the targeted space-limited applications. An
ambient temperature monitoring circuit allows users to set
two separate temperature limit levels, one for during charge
and one for not during charge. The thermally-enhanced QFN
package further improves the thermal performance of the
ISL6292B in space-limited applications.
Ordering Information
Pinout
ISL6292BCR*
ISL6292BCRZ* (Note)
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free 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.
PART NUMBER
TIME
GRN
RED
VIN
ISL6292B TOP VIEW
1
2
3
4
TEMP. RANGE (°C)
16
5
15
®
6
-20 to 70
-20 to 70
14
1
7
13
8
Datasheet
12
11
10
9
VSEN
TEMP
IMIN
IREF
16 Ld 4x4 QFN
16 Ld 4x4 QFN
(Pb-free)
PKG. DWG. #
1-888-INTERSIL or 1-888-352-6832
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Complete Charger for Single-Cell Li-ion Batteries
• Integrated Pass Element and Current Sensor
• No External Blocking Diode Required
• Very Low Thermal Dual-Mode Operation
• 1% Voltage Accuracy with Remote Sense
• Programmable Current Limit up to 1.5A
• Programmable End-of-Charge Current
• Programmable Safety Timer
• Drives a Tri-Color LED
• Charge Current Thermal Foldback
• NTC Thermistor Interface for Battery Temperature Monitor
• Two-Level Ambient Temperature Setting
• Guaranteed to Operate at 2.65V After Start-Up
• Ambient Temperature Range: -20°C to 70°C
• Thermally-Enhanced QFN Packages
• QFN Package:
• Pb-Free Available (RoHS Compliant)
Applications
• Handheld Devices including Medical Handhelds
• PDAs, Cell Phones and Smart Phones
• Portable Instruments, MP3 Players
• Self-Charging Battery Packs
• Stand-Alone Chargers
• USB Bus-Powered Chargers
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
• Technical Brief TB379 “Thermal Characterization of
• Technical Brief TB389 “PCB Land Pattern Design and
- Compliant to JEDEC PUB95 MO-220
- Near Chip Scale Package footprint, which improves
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Packaged Semiconductor Devices”
Surface Mount Guidelines for QFN Packages”
QFN - Quad Flat No Leads - Package Outline
PCB efficiency and has a thinner profile
All other trademarks mentioned are the property of their respective owners.
April 19, 2005
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004, 2005. All Rights Reserved
ISL6292B
FN9139 .1

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ISL6292BCRZ-T Summary of contents

Page 1

... Ordering Information PART NUMBER TEMP. RANGE (°C) ISL6292BCR* - ISL6292BCRZ* (Note) - *Add “-T” suffix for tape and reel. NOTE: Intersil Pb-free 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 ...

Page 2

Absolute Maximum Ratings Supply Voltage (VIN -0 Output Pin ...

Page 3

Electrical Specifications Typical values are tested at VIN = 5V and 25°C Ambient Temperature, maximum and minimum values are guaranteed over -10°C to 70°C Ambient Temperature with a supply voltage in the range of 4.3V to 6.5V, unless otherwise noted. ...

Page 4

Pin Description VIN VIN is the input power source. Connect to a wall adapter. RED, GRN RED and GRN are two open-drain outputs to drive a red and a green LED in the same package. The RED and the GRN ...

Page 5

Block Diagram VIN C 1 Tem pera ture Monitoring IREF R IREF Refe re nces IMIN I R IMIN I SEN TEMP Interfa ce DT TIME GND 5 ISL6292B Q MAIN Q 100000:1 SEN Curre nt Mirror ...

Page 6

Flow Chart TEMP fault removed TEMP FAULT Charger: OFF LED: YELLOW TEMP fault TEMP FAULT Charger: OFF LED: YELLOW TEMP FAULT Charger: OFF LED: YELLOW 6 ISL6292B Anytime POR V TRICKLE CHARGE Charger: ON LED: RED TEMP fault V > ...

Page 7

... Theory of Operation The ISL6292B is based on the Intersil Patent-pending dual-mode charging technology. The dual-mode technology generates very low heat, which enables the charger to be used in space-limited applications. To take advantage of the low-heat feature, a current-limited ac/dc converter is required as the power supply to the charger. The current-limited supply has the I-V characteristics shown in Figure 1 ...

Page 8

Applications Information Power-On Reset (POR) The ISL6292B has a 3.4V rising POR threshold. Before the input voltage reaches the POR threshold, the 2.9V V2P9 pin outputs 0V and the charger is disabled. Once the POR threshold is reached, the V2P9 ...

Page 9

BA T VSEN REF Q1 Enable FIGURE 5. THE INTERNAL VOLTAGE FEEDBACK CIRCUIT C is the timing capacitor shown in the Typical TIME Application circuit. A 1nF capacitor leads to 14 minutes ...

Page 10

V2P9 R U TEMP GND (A) FIGURE 7. EQUIVALENT CIRCUITS FOR THE NTC DIVIDER (A) BEFORE CHARGING STARTS (B) DURING CHARGING. create a hysteresis for each comparator respectively. The DT pin is shorted to GND ...

Page 11

Board Layout Recommendations The ISL6292B is targeted for space-limited applications. In order to maximize the current capability very important that the exposed pad under the package is properly soldered to the board and is connected to other layers ...

Page 12

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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