NCS29001 datasheet(7/16 Pages) ONSEMI

Part #	NCS29001

Description	LED Backlight Driver

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Manufacturer	ONSEMI [ON Semiconductor]

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NCS29001

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7

APPLICATION CONDITIONS

Symbol

Parameter

Condition

Min

Typ

Max

Unit

VINIC

VIN pin voltage

8.5

12

18

V

VINInductor

Inductor input voltage

8.5

80

VOUT

Output voltage range

VOUT/VINInductor Max = 5

VINInductor = 8.5 to 24 V | VOUT = 50 to 80 V

VINInductor = 24 to 50 V | VOUT = 80 to 130 V

VINInductor = 50 to 80 V | VOUT = 130 to 240 V

50

240

V

h

Peak efficiency

VINIC = 12 V, VOUT = 130 V, IOUT = 200 mA

VINIC = 12 V, VOUT = 240 V, IOUT = 200 mA

95

%

DςΟΥΤ

Output Voltage Accuracy

including voltage ripple, from −40°C to 85°C,

VINIC = 8.5 V to 18 V

−2

2

%

POWER UP SEQUENCE

Figure 4. Soft Start Power Up from Standby

Standby

VIN

PWMin

PWMout

Vcomp

UVLO

GATE

For the device to begin the soft start sequence the VIN pin voltage needs to be above the UVLO threshold and the OVP pin

voltage needs to be above the VSCP threshold. From standby mode soft start will begin when STBY pin goes low and PWMin

pin goes high and lasts for a fixed number of clock cycles. This ensures that smooth start up if the device is powered on from

standby with a PWM input.

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