© 2008 Semtech Corporation

SC810

4

Parameter

Symbol

Conditions

Min

Typ

Max

Units

IPRGM Programming Resistor

R

IPRGM

2.05

29.4

kΩ

Fast-Charge Current, adapter mode

I

FQ_AD

R

IPRGM

= 2.94kΩ, VT

PreQ

< V

BAT

< V

CV

643

694

745

mA

Pre-Charge Current

I

PreQ

R

IPRGM

= 2.94kΩ, 1.8V < V

BAT

< VT

PreQ

105

139

173

mA

Termination Current

I

TERM

R

IPRGM

= 2.94kΩ, V

BAT

= V

CV

59

69

80

mA

Dropout Voltage

V

DO

I

BAT

= 700mA, 0°C ≤ T

J

≤ 125°C

0.40

0.60

V

IPRGM Fast-charge Regulated Voltage

V

IPRGM_FQ

V

VIN

= 5.0V, VT

PreQ

< V

BAT

< V

CV

2.04

V

IPRGM Pre-charge Regulated Voltage

V

IPRGM_PQ

1.8V < V

BAT

< VT

PreQ

0.408

V

IPRGM Termination Threshold Voltage

VT

IPRGM_TERM

V

BAT

= V

CV

(either input selected)

0.204

V

Thermal Limiting Threshold

Temperature

T

TL

130

°C

Thermal Limiting Rate

i

T

50

mA/ °C

ENB Input High Voltage

V

IH

1.6

V

ENB Input Mid Voltage

V

IM

0.7

1.3

V

ENB Input Low Voltage

V

IL

0.3

V

ENB Input High-range Threshold

Input Current

I

IH_TH

ENB current required to pull ENB from

floating midrange into high range

23

50

μA

ENB Input High-range Sustain Input

Current

I

IH_SUS

Current required to hold ENB in

high range, Min V

IH

≤ V

ENB

≤ V

BAT

,

Min V

IH

≤ V

BAT

≤ 4.2V

0.3

1

μA

ENB Input Mid-range Load Limit

I

IM

Input will float to mid range when this

load limit is observed.

-5

5

μA

ENB Input Low-range Input Current

I

IL

0V ≤ V

ENB

≤ Max V

IL

-25

-12

μA

ENB Input Leakage

I

ILEAK

V

VIN

= 0V, V

ENB

= V

BAT

= 4.2V

1

μA

STATB Output Low Voltage

V

STAT_LO

I

STAT_SINK

= 2mA

0.5

V

STATB Output High Current

I

STAT_HI

V

STAT

= 5V

1

μA

Electrical Characteristics (continued)

Notes:

(1) Maximum operating voltage is the maximum Vsupply as defined in EIA/JEDEC Standard No. 78, paragraph 2.11. This is the input voltage at

which the charger is guaranteed to begin operation.

(2) Sustained operation to VT

UVLO-F

≤ V

VIN

is guaranteed only if a current limited charging source applied to VIN is pulled below VT

UVLO-R

by the

charging load; forced VIN voltage below VT

UVLO-R

in some cases may result in regulation errors or other unexpected behavior.