SC908MLTRT datasheet(4/30 Pages) SEMTECH

Part #	SC908MLTRT

Description	Power Management IC for Single-Cell Li-Ion Devices

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC908

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Charger (continued)

Charging Adapter

Operating Current

VAD

ICCQ

V

EN_NTC

= 0.5 × V

VSYS

, I

CPB

= I

CHRGB

= I

FLTB

=

I

LBATB

= I

ITERM

= I

IPRGM

= 0mA, V

SEN

= V

LEN

= 0V

1.5

mA

CV Regulation Voltage

V

CV

Measured at BSEN pin

20mA < I

BAT

< 500mA

0°C < T

J

< 125°C

4.16

4.2

4.24

V

Precharge Threshold (Rising)

VT

PreQ

Measured at BSEN pin

2.7

2.8

2.9

V

Recharge Threshold (Falling)

VT

ReQ

V

CV

- V

BSEN

65

113

160

mV

VSYS output voltage (3)

V

VSYS

V

VAD

≥ 5V, I

VSYS

≤ 5mA

4.7

V

VSYS output current

I

VSYS

5mA

ITERM Programming Resistor

R

ITERM

Nominal 1%-tol Standard Value

2.67

17.4

kΩ

I

BAT

Pre-Charge Current

I

PreQ

R

ITERM

= 4.99kΩ to GND

27

39

52

mA

I

BAT

Termination Current

I

TERM

R

ITERM

= 4.99kΩ to GND

27

39

52

mA

IPRGM Programming Resistor

R

IPRGM

Nominal 1%-tol Standard Value

2.15

15.0

kΩ

I

BAT

Fast-Charge Current

I

FQ

R

IPRGM

= 6.04kΩ, V

BAT

= 3.7V

167

173

179

mA

VAD - BAT Dropout Voltage

V

DO

I

BAT

= 500mA, 0°C ≤ T

J

≤ 85°C

0.8

V

IPRGM Regulated Voltage

V

IPRGM

R

IPRGM

= 6.04kΩ to GND

1.45

1.5

1.55

V

ITERM Regulated Voltage

V

ITERM

R

ITERM

= 4.99kΩ to GND

1.45

1.5

1.55

V

RTIME Regulated Voltage

V

RTIME

R

RTIME

= 37.4kΩ to GND

1.475

1.56

1.625

V

Precharge Fault Time-Out

t

PreQF

R

RTIME

= 37.4kΩ to GND

38

47

57

mins

R

RTIME

connected to VSYS

32

42

53

mins

Charge Complete Time-Out

t

QComp

R

RTIME

= 37.4kΩ to GND

2.50

3.10

3.70

hrs

R

RTIME

connected to VSYS

2.10

2.67

3.50

hrs

EN_NTC Thresholds

VT

NTC_DIS

Charger Disable/Reset (Falling)

9

10

11.5

%V

VSYS

VT

NTC_HF

NTC Hot (Falling)

27.5

30

31.5

%V

VSYS

VT

NTC_CR

NTC Cold (Rising)

74

75

76.5

%V

VSYS

EN_NTC Hysteresis

VT

NTC_HYS

V

VAD

= 5V

45

mV

EN_NTC Disable/Reset Hold

Time

t

NTC_DIS_H

Momentary disable resets charger

500

ns

Charger Over-Temperature Shut-

down Temperature (Rising)

T

CHRGR_OT

Hysteresis = 10°C typical

145

°C

Electrical Characteristics (continued)

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