SC623 데이터 시트보기 (PDF) - Semtech Corporation

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SC623

LED Light Management Unit Charge Pump, 4 LEDs, 400mA Flash LED, and SemWire™ Interface

Semtech Corporation 

SC623

Absolute Maximum Ratings

Recommended Operating Conditions

VIN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0

VOUT (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0

C1+, C2+ (V) . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V + 0.3)

OUT

Pin Voltage — All Other Pins (V) . . . . . . . . . -0.3 to (V + 0.3)

IN

VOUT Short Circuit Duration. . . . . . . . . . . . . . . . Continuous

Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . Continuous

ESD Protection Level(1) (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Ambient Temperature Range (°C) . . . . . . . . -40 < T < +85

A

VIN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 < V < 5.5

IN

VOUT (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 < V < 5.25

OUT

Voltage Difference between any two LEDs (V) . . . . . . <1.2

Thermal Information

Thermal Resistance, Junction to Ambient(2) (°C/W) . . . . 35

Maximum Junction Temperature (°C) . . . . . . . . . . . . . . +150

Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +150

Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . . +260

Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters

specified in the Electrical Characteristics section is not recommended.

NOTES:

(1) Tested according to JEDEC standard JESD22-A114-B.

(2) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.

Electrical Characteristics

Unless otherwise noted, T = +25°C for Typ, -40ºC to +85°C for Min and Max, T = 125ºC, V = 3.0V to 4.2V, C = C = C = 2.2μF,

A

J(MAX)

IN

IN

1

2

C = 4.7μF (ESR = 0.03Ω), ΔV ≤ 1.2V(1)

OUT

F

Parameter

Symbol

Conditions

Min Typ Max Units

Supply Specifications

Shutdown Current

Total Quiescent Current

I

Q(OFF)

I

Q

Shutdown, V = 4.2V

IN

Sleep mode, SWIF = V

IN

Charge pump in 1x mode, 4 backlights on

Charge pump in 1.5x mode, 4 backlights on

0.1

2

μA

100 160

μA

3.8 4.65

4.6 5.85 mA

Charge pump in 2x mode, 4 backlights on

4.6 5.85

Fault Protection

Output Short Circuit

Current Limit

Over-Temperature

Flash Mode Safety Timer(2)

I

OUT(SC)

T

OTP

t

FL(MAX)

VOUT pin shorted to GND

Flash sink active

300

mA

160

°C

0.75 1.00 1.25

s

3

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