LTC4101EG Просмотр технического описания (PDF) - Linear Technology

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LTC4101EG

Smart Battery Charger Controller

Linear Technology 

LTC4101

ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VDCIN = 20V, VDD = 3.3V, VBAT = 4V unless otherwise noted. (Note 4)

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX UNITS

VBGATE at Shutdown

AC Present Comparator

ITGATE = 1μA

100

mV

VACP

DCDIV Threshold

DCDIV Hysteresis

VDCDIV Rising from 1V to 1.4V

l 1.14 1.20

1.26

V

25

mV

DCDIV Input Bias Current

ACP VOH

ACP VOL

VDCDIV = 1.2V

IACP = –2mA

IACP = 1mA

–1

1

μA

2

V

0.5

V

DCDIV to ACP Delay

SafetySignal Decoder

VDCDIV = 1.3V

10

μs

SafetySignal Trip (RES_COLD/RES_OR)

SafetySignal Trip (RES_IDEAL/RES_COLD)

SafetySignal Trip (RES_HOT/RES_IDEAL)

SafetySignal Trip (RES_UR/RES_HOT)

Time Between SafetySignal Measurements

RTHA = 1130Ω ±1%, CTH = 1nF (Note 6)

RTHB = 54.9Ω ±1%

RTHA = 1130Ω ±1%, CTH = 1nF (Note 6)

RTHB = 54.9Ω ±1%

RTHA = 1130Ω ±1%, CTH = 1nF (Note 6)

RTHB = 54.9Ω ±1%

RTHA = 1130Ω ±1%, CTH = 1nF (Note 6)

RTHB = 54.9Ω ±1%

DCDIV = 1.3V

DCDIV = 1V

l 95

100

105

kΩ

l 28.5

30

31.5

kΩ

l 2.85

3

3.15

kΩ

l 425

500

575

Ω

32

ms

250

ms

DACs

Charging Current Resolution

Charging Current Granularity

Wake-Up Charging Current (IWAKE-UP)

Charging Current Limit

CSP – BAT

Guaranteed Monotonic Above IMAX/16

RILIM = 0

RILIM = 10k ±1%

RILIM = 33k ±1%

RILIM = Open (or Short to VDD)

All Values of RILIM

All Values of RVLIM

RILIM = 0 (0-1A)

Charging Current = 0x03FF (0x0400 Note 7)

10

Bits

1

mA

2

mA

4

mA

4

mA

80 (Note

mA

5)

97.3

107.3

mV

RILIM = 10k ±1% (0-2A)

97.3

Charging Current = 0x07FE (0x0800 Note 7)

107.3

mV

RILIM = 33k ±1% (0-3A)

72.3

Charging Current = 0x0BFC (0x0C00 Note 7)

82.3

mV

RILIM = 0pen (or Short to VDD) (0-4A)

Charging Current = 0x0FFC (0x1000 Note 7)

l 97.3

107.3

mV

Charging Voltage Resolution

Guaranteed Monotonic (2.9V ≤ VBAT ≤ 5.6V)

11

Bits

Charging Voltage Granularity

16

mV

Charging Voltage Limit

RVLIM = 0

Charging Voltage = 0x1090 (Note 7)

4.206 4.240 4.274

V

RVLIM = 10k ±1%

Charging Voltage = 0x10D0 (Note 7)

4.270 4.304 4.338

V

RVLIM = 33k ±1%

Charging Voltage = 0x1150 (Note 7)

4.397 4.432 4.467

V

RVLIM = 100k ±1%

Charging Voltage = 0x11A0 (Note 7)

4.476 4.512 4.548

V

RVLIM = 0pen (or Short to VDD)

Charging Voltage = 0x1580 (Note 7)

5.460 5.504 5.548

V

4101fa

4

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