ZSPM4521 datasheet(8/30 Pages) IDT

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ZSPM4521 Datasheet

January 27, 2016

Parameter

Symbol

Condition

Min

Typ

Max

Unit

Charging Regulator with LOUT=4.7µH and COUT=4.7µF

Output Current Limit

Tolerance in Full-Charge

Mode

IBAT-FC

IBAT is user programmable;

see Table 2.5.

IBAT -

10%

IBAT

IBAT +

10%

Termination Voltage

Tolerance in Top-Off Mode

VBAT-TO

ICHG = 0.1C, 0°C < Tj < 85°C

VBAT is user programmable;

see section 2.4.

VBAT -

VBAT

VBAT +

Top-Off Mode Time Out

tTO

120

Minutes

Full-Charge Timer

tFC

200

1400

Minutes

Timer Accuracy

tACC

-10%

+10%

High Side (HS) Switch On

Resistance

RDSON

ISW = -1A, TJ=25°C

200

mΩ

Low Side (LS) Switch On

Resistance

ISW = 1A, TJ=25°C

250

mΩ

Maximum Output Current

IBAT

1.5

Over-Current Detection

IOCD

HS switch current

2.5

VBAT Over-Voltage Threshold

VBAT-OV

101%

VBAT

102%

VBAT

103%

VBAT

Maximum Duty Cycle

DUTYMAX

Thermistor

VTH_REF Output Voltage

VVTH_REF

IVT_REF = 2µA to 100µA

1.8

Thermistor: 10k

Ω Temperature Thresholds – β=3434K

0°C VTHERM Threshold

(0°C)

0°C

Decreasing Temperature

75.6

%VTH_REF

0°C VTHERM Threshold with

Hysteresis (10°C)

0°CHYST

Increasing Temperature

66.5

%VTH_REF

10°C VTHERM Threshold

(10°C)

10°C

Decreasing Temperature

66.2

%VTH_REF

10°C VTHERM Threshold

with Hysteresis (11°C)

10°CHYST

Increasing Temperature

65.4

%VTH_REF

45°C VTHERM Threshold

(45°C)

45°C

Increasing Temperature

34.5

%VTH_REF

45°C VTHERM Threshold

with Hysteresis (44°C)

45°CHYST

Decreasing Temperature

35.3

%VTH_REF

50°C VTHERM Threshold

(50°C)

50°C

Increasing Temperature

30.8

%VTH_REF

50°C VTHERM Threshold

with Hysteresis (49°C)

50°CHYST

Decreasing Temperature

31.5

%VTH_REF

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