OBSOLETE

LM3647

SNOS517H – MARCH 2000 – REVISED APRIL 2013

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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

ABSOLUTE MAXIMUM RATINGS

(1) (2)

7V

Voltage at Any Pin

100 mA

Total Current out of GND Pin (Sink)

110 mA

Storage Temperature Range

-65°C to +140°C

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC Electrical Specifications are not

ensured when operating the device at absolute maximum ratings.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

DC ELECTRICAL CHARACTERISTICS

Parameter

Conditions

Min

Typ

Max

Units

Operating Voltage

4.5

5.5

V

Supply Current

2.5

mA

LED-pin Sink Current

7.5

15

mA

Temperature Input Levels

Ni-Cd/Ni-MH Upper Limit

(Voltage at TEMP-pin)

3.15

V

Li-Ion Upper Limit

(Voltage at TEMP-pin)

3.0

V

Lower Limit

(Voltage at TEMP-pin)

0.5

V

Start Limit

(Voltage at TEMP-pin)

2.2

V

L-Ion (for both 4.1 and 4.2V Cells)

Maintenance Charge Minimum Voltage

(CEL pin)

2.6

V

Maintenance Charge Restart Voltage

(CEL pin)

2.153

V

Good Battery Threshold

(CEL pin)

1.2

V

Maintenance Current

(Voltage at CS-pin)

2.3

V

Maintenance Current Lower Threshold

(Voltage at CS-pin)

2.42

V

Minimum Current Fast Charge Termination

(Voltage at CS-pin)

2.3

V

Qualification Current

(Voltage at CS-pin)

2.3

V

Maximum Charging Current

(Voltage at CS-pin)

1.5

V

Ni-Cd/Ni-MH

Maximum Battery Voltage

(CEL pin)

3.017

V

Maximum Battery Current

(Voltage at CS-pin)

1.5

V

Battery Presence Limit

(CEL pin)

1.0

V

Discharged Battery Limit

(CEL pin)

1.7

V

Good Battery Threshold

(CEL pin)

1.2

V

Soft Start Current

(Voltage at CS-pin)

2.3

V

Topping Charge Current

(Voltage at CS-pin)

2.3

V

Maintenance Charge Current

(Voltage at CS-pin)

2.425

2.45

V

2.5

V

AC ELECTRICAL CHARACTERISTICS

Parameter

Conditions

Min

Typ

Max

Units

RCIN Frequency

R = 3.3 k

Ω, C = 68 pF

2.5

MHz

Fast-PWM Frequency

250

Hz

Slow-PWM Frequency

0.1

Hz

4

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