LTC1732EMS-4.2#TRPBF datasheet, PDF

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LTC1732EMS-4.2#TRPBF: DescriptionIC CTRLR CHRGR LI-ION 10-MSOP; CategoryPower/power management The power supply circuit; File Size98KB，5 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC1732EMS-4.2#TRPBF Overview

IC CTRLR CHRGR LI-ION 10-MSOP

LTC1732EMS-4.2#TRPBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	MSOP
package instruction	TSSOP, TSSOP10,.19,20
Contacts	10
Manufacturer packaging code	MS
Reach Compliance Code	compliant
ECCN code	EAR99
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	BATTERY CHARGE CONTROLLER
Maximum input voltage	12 V
Minimum input voltage	4.5 V
Nominal input voltage	6 V
JESD-30 code	S-PDSO-G10
JESD-609 code	e3
length	3 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	10
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP10,.19,20
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply current (Isup)	3 mA
Maximum supply voltage (Vsup)	12 V
Minimum supply voltage (Vsup)	4.5 V
Nominal supply voltage (Vsup)	6 V
surface mount	YES
Switch configuration	SINGLE
Temperature level	INDUSTRIAL
Terminal surface	Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Threshold voltage nominal	+4.05V
Maximum time at peak reflow temperature	30
width	3 mm

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Quick Start Guide for

Demo Board DC364A-A and DC364A-B

Demonstration boards DC364A-A and DC364A-B are complete constant-current/constant-voltage

battery chargers designed to charge one Lithium-Ion cell. Both feature the LTC1732 Linear

Battery Charger driving a P-channel MOSFET in a series pass linear regulator configuration for

charging at a maximum current of 700mA (limited by the power dissipation capabilities of the

pass transistor).

Demo board DC364A-A features the LTC1732-4, which has a recharge threshold voltage of 3.8V,

making it suitable for charging 4.1V or 4.2V cells (selectable by jumper on the demo board).

Demo board DC364A-B features the LTC1732-4.2, which is recommended only for charging a

4.2V cell, due to its recharge threshold voltage of 4.05V.

Other Features include:

•

Preset float voltages of 4.1 and 4.2V ± 1% (DC364A-A)

700mA Constant Current (can be programmed for other charge currents)

3-hour charge termination timer. This timer can be set for other time periods through a

capacitor change. For instance, you may want to use a much shorter period (on the order of

30 seconds) when evaluating the board with a battery simulator instead of a Li-Ion battery.

Manual Shutdown

C/10 Trickle charge for deeply discharged batteries

Auto recharge when battery voltage drops below preset threshold (3.8V for DC364A-A and

4.05V for DC364A-B).

Low battery drain current when the input supply is removed

Input Power OK LED indicator (ACPR)

C/10 Charge LED indicator (CHRG)

•

Small surface mount components are used to minimize board space and height with the circuitry

occupying approximately 0.15 square inches of board space with a height of 0.054 inches

(1.4mm).

DC364A-A and DC364A-B Quick Start Guide

Page 1 of 1

Quick Start Procedure

Refer to Figure 1 for proper measurement equipment setup and follow the procedure below:

Install jumper JP1 to select the cell voltage.

For a 4.2V cell, JP1 should be between the center pin and the top pin; for a 4.1V cell it should

be connected to the center and the bottom pin.

Install jumper JP2 to enable the charger.

Set the input power supply to 0V, and then connect it to the V

and GND pins of the demo

board.

Set the battery simulator to 0V, and then connect it to the BAT and GND pins.

Connect the digital voltmeters as shown in the setup diagram to measure V

, charger voltage

(VBAT) and the charge current (IBAT).

Start the demo board evaluation by increasing the input power supply to approximately 3.8V

(battery simulator power supply set for 0V). The charger output voltage and charge current

should be 0. The CHRG and ACPR LEDs should be off.

The charger is off due to the

undervoltage lockout feature.

Increase the input voltage to 5V and keep the battery simulator power supply at 0V. Both

LEDs (CHRG and ACPR) should now be on, the charger output voltage (VBAT) should be

approximately 200mV, and the charge current should be approximately 100mA (10mV on the

charge current DVM).

This is the trickle charge mode for a deeply discharged battery.

Typically, a battery that has not been charged for a long time.

Starting from 0V, slowly increase the battery simulator power supply (VBAT), observing the

charger’s output voltage on the DVM. When the charger’s output voltage exceeds

approximately 2.5V, the charger will suddenly enter the Constant current portion of the

charge cycle resulting in an abrupt increase in charge current (IBAT) to the programmed

value of approximately 700mA (70mV on the charge current DVM).

This is the constant

current mode.

Continue slowly increasing the battery simulator power supply, thus simulating a battery

accepting charge. The charge current should remain at the programmed value of 700mA until

the charger output voltage is within approximately 10mV of the preset charge voltage, at

which time the charge current will begin to decrease.

This is the beginning of the constant

voltage portion of the charge cycle.

to approximately 200mA (20mV on the charge current DVM), then read the charger output

voltage.

This reading is the charger float voltage (VBAT) which will be either 4.1V or

4.2V ± 40mV depending on the location of the SELECT jumper.

10.

Continue slowly increasing the battery simulator power supply until the charge current drops

11.

Remove the SHDN jumper (JP2). The charger will shut down, dropping the charge current to

0mA. The ACPR LED remains on and the charge LED goes out.

12.

Replace the SHDN jumper (JP2).

13.

Continue slowly increasing the battery simulator power supply while observing the CHRG

LED. The LED will go out when the charge current drops to approximately 10% of the

programmed charge current of 700mA.

This verifies that the C/10 output is operating

correctly.

DC364A-A and DC364A-B Quick Start Guide

Page 3 of 3

LTC1732EMS-4.2#TRPBF Related Products

	LTC1732EMS-4.2#TRPBF	DC364A-B	LTC1732EMS-4#TR	LTC1732EMS-4#TRPBF	LTC1732EMS-4.2#PBF	LTC1732EMS-4#PBF
Description	IC CTRLR CHRGR LI-ION 10-MSOP	board eval for ltc1732ems	IC ctrlr batt chrg LI-ion 10msop	IC CTRLR BATT CHRG LI-ION 10MSOP	IC CTRLR BATT CHRG LI-ION 10MSOP	IC CTRLR BATT CHRG LI-ION 10MSOP
Brand Name	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	-	incompatible	conform to	conform to	conform to
Parts packaging code	MSOP	-	MSOP	MSOP	MSOP	MSOP
package instruction	TSSOP, TSSOP10,.19,20	-	TSSOP,	TSSOP, TSSOP10,.19,20	TSSOP,	TSSOP,
Contacts	10	-	10	10	10	10
Manufacturer packaging code	MS	-	MS	MS	MS	MS
Reach Compliance Code	compliant	-	not_compliant	compliant	compliant	compliant
ECCN code	EAR99	-	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	BATTERY CHARGE CONTROLLER	-	BATTERY CHARGE CONTROLLER	BATTERY CHARGE CONTROLLER	BATTERY CHARGE CONTROLLER	BATTERY CHARGE CONTROLLER
Maximum input voltage	12 V	-	12 V	12 V	12 V	12 V
Minimum input voltage	4.5 V	-	4.5 V	4.5 V	4.5 V	4.5 V
Nominal input voltage	6 V	-	6 V	6 V	6 V	6 V
JESD-30 code	S-PDSO-G10	-	S-PDSO-G10	S-PDSO-G10	S-PDSO-G10	S-PDSO-G10
JESD-609 code	e3	-	e0	e3	e3	e3
length	3 mm	-	3 mm	3 mm	3 mm	3 mm
Humidity sensitivity level	1	-	1	1	1	1
Number of functions	1	-	1	1	1	1
Number of terminals	10	-	10	10	10	10
Maximum operating temperature	85 °C	-	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	-	TSSOP	TSSOP	TSSOP	TSSOP
Package shape	SQUARE	-	SQUARE	SQUARE	SQUARE	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	-	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	-	235	260	260	260
Certification status	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.1 mm	-	1.1 mm	1.1 mm	1.1 mm	1.1 mm
surface mount	YES	-	YES	YES	YES	YES
Switch configuration	SINGLE	-	SINGLE	SINGLE	SINGLE	SINGLE
Temperature level	INDUSTRIAL	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin (Sn)	-	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.5 mm	-	0.5 mm	0.5 mm	0.5 mm	0.5 mm
Terminal location	DUAL	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	-	20	30	30	30
width	3 mm	-	3 mm	3 mm	3 mm	3 mm
Base Number Matches	-	-	1	1	1	1

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