4

 2007 Semtech Corp.

SC805A

www.semtech.com

POWER MANAGEMENT

Parameter

Symbol

Condition

25°C

TA

(-40°C to +85°C)

Units

Min

Typ

Max

Min

Max

En-NTC Thresholds

VT

DIS

SC805A Disable

< 1.1

0.7

V

VT

NTCH

NTC Hot Vth Vcc = 5

0.3V

CC

0.294V

CC

0.314V

CC

V

VT

NTCC

NTC Cold Vth Vcc = 5

0.75V

CC

0.736V

CC

0.756V

CC

V

VT

NOBAT

No Battery Detect,

Vcc = 5

0.95V

CC

0.93V

CC

0.97V

CC

V

NTC

HYS

Hot/Cold Hysteresis

50

mV

Over-Temperature

Shutdown

OT

Hysteresis = 10°C

150

°C

CHRGB LED

Output

VCB

VOH

Charge Complete

Isrc = 2mA

4.5

4.3

5.0

V

VCB

VOL

Charging Isnk = 2mA

0.2

0.05

0.5

V

ICB

OFF

Disable or LDO-mode

Off-leakage

0.1

1.0

µA

NOBAT Output

VNB

VOH

EN = VCC, Isrc = 1mA

4.8

4.5

V

INB

OFF

EN = VCC/2

Off-Leakage

0.1

1.0

µA

VCCIL Resistance

VCCIL

R

R VCC to VCCIL,

1 = 100mA

0.2

Ω

Reduced

Fast-Charge Current

lfqRed

Vout = 3.8V,

Rprog = 1.87k,

VCCIL Load = 200mA

585

545

625

mA

Electrical Characteristics (Cont.)

Note:

(1) Charge current is reduced by VCCIL current. VCCIL current is not limited by the IC.