SC622 Ver la hoja de datos (PDF) - Semtech Corporation

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componentes Descripción

Fabricante

SC622

LED Light Management Unit Charge Pump, 400mA Flash LED, Dual LDOs, and SemWire™ Interface

Semtech Corporation 

SC622

Electrical Characteristics (continued)

Parameter

Symbol

Fault Protection (continued)

Charge Pump

V

Over-Voltage Protection

OVP

Undervoltage Lockout

V

UVLO

V

UVLO-HYS

Charge Pump Electrical Specifications

Maximum Total Output

Current

I

OUT(MAX)

Flash Current Setting

Flash Current Accuracy

1x Mode to 1.5x Mode

Falling Transition Voltage

1.5x Mode to 2x Mode

Falling Transition Voltage

Current Sink Off-State

Leakage Current

I

FL

IFL_ACC

V

TRANS1x

V

TRANS1.5x

I

BLn

Pump Frequency

f

PUMP

LDO Electrical Specifications

LDO1 Voltage Setting

V

LDO1

LDO2 Voltage Setting

LDO1, LDO2 Output

Voltage Accuracy

V

LDO2

VV

LDO1, LDO2

Line Regulation

ΔV

LINE

Conditions

VOUT pin open circuit, VOUT = VOVP

rising threshold

Decreasing V

IN

V > 3.4V, V

= 4.0V

IN

OUT(MAX)

Nominal setting for FL

VIN = 3.7V, IFL = 400mA, TA = 25°C

I = 100mA, V = 3.3V

OUT

OUT

I = 100mA, V = 4.5V(2)

OUT

OUT

V = V = 4.2V

IN

FL

V = 3.2V

IN

Range of nominal settings

in 100mV increments

Range of nominal settings

in 100mV increments

V = 3.7V, I = 1mA

IN

LDO

LDO1, I = 1mA, V = 2.8V

LDO1

OUT

LDO2, I = 1mA, V = 1.8V

LDO2

OUT

Min Typ Max Units

5.3 5.7

6.0

V

2.4

V

300

mV

400

mA

50

400 mA

-15

+15

%

3.37

V

3.3

V

0.1

1

μA

250

kHz

2.5

3.3

V

1.5

1.8

V

-3.5 ±3 +3.5

%

2.1

7.2

mV

1.3

4.8

4

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