LT1510IS8 datasheet(4/16 Pages) LINER

Part #	LT1510IS8

Description	Constant-Voltage/ Constant-Current Battery Charger

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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4

LT1510/LT1510-5

ELECTRICAL CHARACTERISTICS

VCC = 16V, VBAT = 8V, VMAX (maximum operating VCC) = 28V, no load on any outputs, unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Current Amplifier (CA2)

Transconductance

VC = 1V, IVC = ±1µA

150

250

550

µmho

Maximum VC for Switch OFF

q

0.6

V

IVC Current (Out of Pin)

VC ≥ 0.6V

100

µA

VC < 0.45V

3

mA

Voltage Amplifier (VA), 16-Pin Only

Transconductance (Note 2)

Output Current from 100

µA to 500µA

0.5

1.2

2.5

mho

Output Source Current, VCC = 10V

VPROG = VOVP = VREF + 10mV

1.3

mA

OVP Input Bias Current

At 0.75mA VA Output Current

q

50

150

nA

The q denotes specifications which apply over the specified

temperature range.

Note 1: Tested with Test Circuit 1.

Note 2: Tested with Test Circuit 2.

Note 3: Sense resistor RS1 and package bond wires.

Note 4: Applies to 16-pin only. 8-pin packages are guaranteed but not

tested at – 40

°C.

Note 5: Current (

≈ 700µA) flows into the pins during normal operation and

also when an external shutdown signal on the VC pin is greater than 0.3V.

Current decreases to

≈ 200µA and flows out of the pins when external

shutdown holds the VC pin below 0.3V. Current drops to near zero when

input voltage collapses. See external Shutdown in Applications Information

section.

Note 6: A linear interpolation can be used for reference voltage

specification between 0

°C and –40°C.

Note 7: Commercial grade device specifications are guaranteed over the

0

°C to 70°C temperature range. In addition, commercial grade device

specifications are assured over the –40

°C to 85°C temperature range by

design or correlation, but are not production tested.

Maximum allowable ambient temperature may be limited by power

dissipation. Parts may not necessarily be operated simultaneously at

maximum power dissipation and maximum ambient temperature.

Temperature rise calculations must be done as shown in the Applications

Information section to ensure that maximum junction temperature does

not exceed the 125

°C limit. With high power dissipation, maximum

ambient temperature may be less than 70

°C.

Note 8: Industrial grade device specifications are guaranteed over the

–40

°C to 85°C temperature range.

Note 9: 91% maximum duty cycle is guaranteed by design if VBAT or VX

(see Figure 8 in Application Information) is kept between 3V and 5V.

Note 10: VBAT = 4.2V.

Thermally Limited Maximum

Charging Current, 8-Pin SO

INPUT VOLTAGE (V)

0

1.3

1.1

0.9

0.7

0.5

0.3

20

1510 G12

5

10

15

25

16V BATTERY

12V BATTERY

8V BATTERY

4V BATTERY

(

θJA=125°C/W)

TAMAX=60°C

TJMAX=125°C

Thermally Limited Maximum

Charging Current, 16-Pin SO

INPUT VOLTAGE (V)

0

1.5

1.3

1.1

0.9

0.7

0.5

20

1510 G13

5

10

15

25

(

θJA=50°C/W)

TAMAX=60°C

TJMAX=125°C

16V BATTERY

12V BATTERY

8V BATTERY

4V BATTERY

Thermally Limited Maximum

Charging Current, 16-Pin GN

INPUT VOLTAGE (V)

0

1.5

1.3

1.1

0.9

0.7

0.5

20

LT1510 • TPC14

5

10

15

25

θJA = 80°C/W

TAMAX = 60°C

TJMAX = 125°C

4V BATTERY

8V BATTERY

12V BATTERY

16V BATTERY

TYPICAL PERFORMANCE CHARACTERISTICS

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