Protection IC Datasheet

© 2024 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: JC. 08/12/24

LS0502SCD33

Super Capacitor Protection IC for Backup Power Applications

4

Parameter

Test Conditions

Min

Typ

Max

Unit

Super Capacitor Charger/Discharger

V

CFB Threshold Voltage to Stop Charging

-

1.04

1.08

1.12

V

V

CFB Hysteresis

-

-

40

-

mV

CFB Regulation Reference Voltage

-

1.05

1.1

1.15

V

CFB Leakage Current

-

-

-

50

nA

Charge Current

R

ICHG = 33 kΩ, VCAP = 3 V

75

100

125

mA

R

ICHG = 33 kΩ, VCAP = 0 V

30

45

60

mA

Charging/Discharging PMOS Rdson

-

-

100

-

mΩ

Capacitor Voltage Clamp for each Capacitor

-

2.44

2.65

2.76

V

Maximum Capacitor Stack Voltage

-

4.88

5.3

5.52

V

VMID Balance Source Current Threshold

VCAP = 4 V, VMID Rising

1.93

1.99

2.04

V

VCAP = 4 V, VMID Falling

1.92

1.98

2.03

V

VMID Balance Sink Current Threshold

VCAP = 4 V, VMID Rising

1.96

2.02

2.07

V

VCAP = 4 V, VMID Falling

1.95

2.01

2.06

V

PMOS Body Diode Switch (VCAP-VSYS) Threshold Voltage

VCAP ramp up from below VSYS

-

100

-

mV

PMOS Charge Mode and Switch Body V

DS Threshold Voltage

VCAP ramp down from above VSYS

-

250

-

mV

VCAP Charge Mode Threshold (VSYS- VCAP) Voltage

VCAP ramp down from above VSYS

-

10

-

mV

VCAP Charge Threshold (VSYS- VCAP) Hysteresis Voltage

VCAP ramp up from below VSYS

-

-100

-

mV

Input Power Fail Comparator

V

PFB Threshold Voltage (Falling)

-

-

1.2

-

V

V

PFB Hysteresis

-

-

85

-

mV

VSYS Power Good Threshold

VIN -VSYS

-

260

-

mV

VSYS Power Fail Threshold

VIN-VSYS

-

320

-

mV

PFLT Output Low Voltage

I

SINK = 1 mA

-

100

-

mV

PFLT High Impedance Leakage

V

PFLT = 5 V

-

-

0.1

μA

PFLT Deglitch Time

-

-

3.5

-

ms

Thermal Shutdown Temperature

T

J rising, 30 °C typical hysteresis

-

150

-

°C

Thermal Shutdown Hysteresis

-

-

30

-

°C

Electrical Characteristics (T

A = +25 °C, VIN = 5 V, VCAP = 5 V, unless otherwise specified)

1

Notes:

1. Limits are 100 % production testes @ T

A = +25 °C, unless otherwise noted. Limits over the temperature range are guaranteed by design.

2. Guaranteed by design, not production tested.