NCP1240BD100R2G datasheet(4/45 Pages) ONSEMI

Part #	NCP1240BD100R2G

Description	Fixed Frequency Current Mode Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP1240

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MAXIMUM RATINGS

Rating

Symbol

Value

Unit

DRV

(pin 5)

Maximum voltage on DRV pin

(Dc−Current self−limited if operated within the allowed range) (Note 1)

–0.3 to 20

±1000 (peak)

V

mA

VCC

(pin 6)

VCCPower Supply voltage, VCC pin, continuous voltage

Power Supply voltage, VCC pin, continuous voltage (Note 1)

–0.3 to 28

±30 (peak)

V

mA

HV

(pin 8)

Maximum voltage on HV pin

(Dc−Current self−limited if operated within the allowed range)

–0.3 to 500

±20

V

mA

Vmax

Maximum voltage on low power pins (except pin 5, pin 6 and pin 8)

(Dc−Current self−limited if operated within the allowed range) (Note 1)

–0.3 to 10

±10 (peak)

V

mA

RqJ−A

Thermal Resistance SOIC−7

Junction-to-Air, low conductivity PCB (Note 2)

Junction-to-Air, medium conductivity PCB (Note 3)

Junction-to-Air, high conductivity PCB (Note 4)

162

147

115

°C/W

RqJ−C

Thermal Resistance Junction−to−Case

73

°C/W

TJMAX

Operating Junction Temperature

−40 to +150

°C

TSTRGMAX Storage Temperature Range

−60 to +150

°C

ESD Capability, HBM model (All pins except HV) per JEDEC Standard JESD22,

Method A114E

> 2000

V

ESD Capability, Machine Model per JEDEC Standard JESD22, Method A115A

> 200

V

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality

should not be assumed, damage may occur and reliability may be affected.

1. This device contains latch-up protection and exceeds 100 mA per JEDEC Standard JESD78.

2. As mounted on a 80 x 100 x 1.5 mm FR4 substrate with a single layer of 50 mm2 of 2 oz copper traces and heat spreading area. As specified

for a JEDEC 51-1 conductivity test PCB. Test conditions were under natural convection or zero air flow.

3. As mounted on a 80 x 100 x 1.5 mm FR4 substrate with a single layer of 100 mm2 of 2 oz copper traces and heat spreading area. As specified

for a JEDEC 51-2 conductivity test PCB. Test conditions were under natural convection or zero air flow.

4. As mounted on a 80 x 100 x 1.5 mm FR4 substrate with a single layer of 650 mm2 of 2 oz copper traces and heat spreading area. As specified

for a JEDEC 51-3 conductivity test PCB. Test conditions were under natural convection or zero air flow.

ELECTRICAL CHARACTERISTICS (For typical values TJ = 25°C, for min/max values TJ = −40°C to +125°C, VHV = 125 V,

VCC = 11 V unless otherwise noted)

Characteristics

Test Condition

Symbol

Min

Typ

Max

Unit

HIGH VOLTAGE CURRENT SOURCE

Minimum Voltage for Current Source

Operation

VHV(min)

−

30

40

V

Current Flowing Out of VCC Pin

(X2 discharge current value is equal to Istart2)

VCC = 0 V

VCC = VCC(on) − 0.5 V

Istart1

Istart2

0.2

5

0.5

8

0.8

11

mA

Off−state Leakage Current

VHV = 500 V, VCC = 15 V

Istart(off)

10

25

50

mA

Off−mode HV Supply Current

VHV = 141 V,

VHV = 325 V,

VCC loaded by 4.7 mF cap

IHV(off)

−

45

50

60

70

mA

SUPPLY

HV Current Source Regulation Threshold

VCC(reg)

8

11

−

V

Turn−on Threshold Level, VCC Going Up

HV Current Source Stop Threshold

VCC(on)

11.0

12.0

13.0

V

HV Current Source Restart Threshold

VCC(min)

7.8

8.4

9.0

V

Turn−off Threshold (Note 5)

VCC(off)

8.8

9.3

9.8

V

Overvoltage Threshold

VCC(ovp)

25

26.5

28

V

5. VCC(off) < VCC(min) with the minimum gap 0.5 V.

6. Internal supply current only, currents sourced via FB pin is not included (current is flowing in GND pin only).

7. Guaranteed by design.

8. CS pin source current is a sum of Ibias and IOPC, thus at VHV = 125 V is observed the Ibias only, because IOPC is switched off.

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