Fairchild Semiconductor KA5H0280R, KA5H0265RC, KA5H02659RN, KA5M0265R, KA5M02659RN Datasheet

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KA5x02xx-SERIES

KA5H0265RC, KA5M0265R, KA5L0265R, KA5H02659RN/KA5M02659RN, KA5H0280R, KA5M0280R

Fairchild Power Switch(FPS)

Features	Description
• Precision Fixed Operating Frequency (100/67/50kHz)	The Fairchild Power Switch(FPS) product family is specially
• Low Start-up Current (Typ. 100uA)	designed for an off-line SMPS with minimal external
• Pulse by Pulse Current Limiting	components. The Fairchild Power Switch(FPS) consist of high
• Over Load Protection	voltage power SenseFET and current mode PWM IC. Included
• Over Voltage Protection (Min. 25V)	PWM controller features integrated fixed oscillator, under
• Internal Thermal Shutdown Function	voltage lock out, leading edge blanking, optimized gate turn-on/
• Under Voltage Lockout	turn-off driver, thermal shut down protection, over voltage
• Internal High Voltage Sense FET	protection, and temperature compensated precision current
• Auto-Restart Mode	sources for loop compensation and fault protection circuitry-
	compared to discrete MOSFET and controller or RCC
	switching converter solution. The Fairchild Power Switch(FPS)
	can reduce total component count, design size, weight and at the
	same time increase efficiency, productivity, and system
	reliability. It has a basic platform well suited for cost-effective
	design in either a flyback converter or a forward converter.

	TO-220F-4L	8-DIP	TO220-5L
		1	1
	1	1.6.7.8. Drain
	1. GND		1. Drain
		2. GND	2. GND
	2. Drain
		3. Vcc	3. Vcc
	3. Vcc
		4. FB	4. FB
	4. FB
		5. NC	5. S/S

Internal Block Diagram

VCC
32V				5V	Internal	DRAIN
				Vref	bias	SFET
					Good
* Soft Start					logic
* Soft Start				OSC
5V				OSC
5V					S
uA					S
uA					R Q
					R Q
FB		2.5R		−	L.E.B
5µ A	1mA	2.5R		+	L.E.B
	9V	1R		+
		1R
					0.1V
	+				0.1V
	+
7.5V	−				S	GND
	+		Thermal S/D		R Q
	+		Thermal S/D
27V	−				Power on reset
27V	−	OVER VOLTAGE S/D
		OVER VOLTAGE S/D
* KA5H0265RC

Rev.1.0.4

KA5X02XX-SERIES

Absolute Maximum Ratings

(Ta=25° C, unless otherwise specified)

Characteristic	Symbol	Value	Unit
KA5x0265xRx
Drain-Gate Voltage (RGS=1MΩ )	VDGR	650	V

Gate-Source (GND) Voltage	VGS	± 30	V

Drain Current Pulsed (1)	IDM	8.0	ADC
Continuous Drain Current (TC=25° C)	ID	2.0	ADC
Continuous Drain Current (TC=100° C)	ID	1.3	ADC

Single Pulsed Avalanche Energy (2)	EAS	68	mJ
Maximum Supply Voltage	VCC,MAX	30	V

Analog Input Voltage Range	VFB	-0.3 to VSD	V
Total Power Dissipation	PD	42	W

	Darting	0.33	W/° C
	Darting	0.33	W/° C

Operating Junction Temperature.	TJ	+160	° C
Operating Ambient Temperature.	TA	-25 to +85	° C
Storage Temperature Range.	TSTG	-55 to +150	° C


KA5x0280R
Drain-Gate Voltage (RGS=1MΩ )	VDGR	800	V

Gate-Source (GND) Voltage	VGS	± 30	V

Drain Current Pulsed (1)	IDM	8.0	ADC
Continuous Drain Current (TC=25° C)	ID	2.0	ADC

Continuous Drain Current (TC=100° C)	ID	1.3	ADC

Single Pulsed Avalanche Energy (2)	EAS	90	mJ
Maximum Supply Voltage	VCC,MAX	30	V
Analog Input Voltage Range	VFB	-0.3 to VSD	V

Total Power Dissipation	PD	35	W

	Darting	0.28	W/° C
	Darting	0.28	W/° C

Operating Junction Temperature.	TJ	+160	° C

Operating Ambient Temperature.	TA	-25 to +85	° C

Storage Temperature Range.	TSTG	-55 to +150	° C

Note:

1.Repetitive rating: Pulse width limited by maximum junction temperature

2.L = 51mH, starting Tj = 25° C

KA5X02XX-SERIES

Electrical Characteristics (SFET Part)

(Ta=25° C unless otherwise specified)

Parameter			Symbol	Condition	Min.	Typ.	Max.	Unit
KA5x0265xRx
Drain-Source Breakdown Voltage			BVDSS	VGS=0V, ID=50µ A	650	-	-	V

Zero Gate Voltage Drain Current			IDSS	VDS=Max. Rating, VGS=0V	-	-	50	µ	A

				VDS=0.8Max. Rating,	-	-	200	µ	A
				VGS=0V, TC=125° C	-	-	200	µ	A
				VGS=0V, TC=125° C
Static Drain-Source on Resistance (Note)			RDS(ON)	VGS=10V, ID=0.5A	-	5.0	6.0	Ω
Forward Transconductance (Note)			gfs	VDS=50V, ID=0.5A	1.5	2.5	-	S
Input Capacitance			Ciss	VGS=0V, VDS=25V,	-	550	-

Output Capacitance			Coss		-	38	-	pF
Output Capacitance			Coss	f=1MHz	-	38	-	pF

Reverse Transfer Capacitance			Crss		-	17	-
Reverse Transfer Capacitance			Crss		-	17	-

Turn on Delay Time			td(on)	VDD=0.5B VDSS, ID=1.0A	-	20	-

Rise Time			tr		-	15	-
Rise Time			tr	(MOSFET switching time is	-	15	-	nS
Turn Off Delay Time			td(off)	essentially independent of	-	55	-	nS
Turn Off Delay Time			td(off)	essentially independent of	-	55	-
				operating temperature)
Fall Time			tf	operating temperature)	-	25	-
Fall Time			tf		-	25	-

Total Gate Charge			Qg	VGS=10V, ID=1.0A,	-	-	35
(Gate-Source+Gate-Drain)			Qg	VDS=0.5B VDSS (MOSFET	-	-	35
(Gate-Source+Gate-Drain)				VDS=0.5B VDSS (MOSFET
				switching time is essentially				nC
Gate-Source Charge			Qgs	switching time is essentially	-	3	-	nC
Gate-Source Charge			Qgs	independent of operating	-	3	-

Gate-Drain (Miller) Charge			Qgd		-	12	-
Gate-Drain (Miller) Charge			Qgd	temperature)	-	12	-


KA5x0280R
Drain-Source Breakdown Voltage			BVDSS	VGS=0V, ID=50µ A	800	-	-	V

Zero Gate Voltage Drain Current			IDSS	VDS=Max. Rating, VGS=0V	-	-	50	µ	A

				VDS=0.8Max. Rating,	-	-	200	µ	A
				VGS=0V, TC=125° C	-	-	200	µ	A
				VGS=0V, TC=125° C
Static Drain-Source on Resistance (Note)			RDS(ON)	VGS=10V, ID=0.5A	-	5.6	7.0	Ω
Forward Transconductance (Note)			gfs	VDS=50V, ID=0.5A	1.5	2.5	-	S
Input Capacitance			Ciss	VGS=0V, VDS=25V,	-	250	-

Output Capacitance			Coss		-	52	-	pF
Output Capacitance			Coss	f=1MHz	-	52	-	pF

Reverse Transfer Capacitance			Crss		-	25	-
Reverse Transfer Capacitance			Crss		-	25	-

Turn on Delay Time			td(on)	VDD=0.5B VDSS, ID=1.0A	-	21	-

Rise Time			tr		-	28	-
Rise Time			tr	(MOSFET switching time is	-	28	-	nS
Turn Off Delay Time			td(off)	essentially independent of	-	77	-	nS
Turn Off Delay Time			td(off)	essentially independent of	-	77	-
				operating temperature)
Fall Time			tf	operating temperature)	-	24	-
Fall Time			tf		-	24	-

Total Gate Charge			Qg	VGS=10V, ID=1.0A,	-	-	60
(Gate-Source+Gate-Drain)			Qg	VDS=0.5B VDSS (MOSFET	-	-	60
(Gate-Source+Gate-Drain)				VDS=0.5B VDSS (MOSFET				nC
				switching time is essentially
Gate-Source Charge			Qgs	switching time is essentially	-	15	-
Gate-Source Charge			Qgs	independent of operating	-	15	-

Gate-Drain (Miller) Charge			Qgd		-	20	-
Gate-Drain (Miller) Charge			Qgd	temperature)	-	20	-

Note:
1. Pulse test: Pulse width ≤ 300µ S, duty cycle ≤			2%
2.	S =	1
	S =	---
		R

KA5X02XX-SERIES

Electrical Characteristics (Control Part) (Continued)

(Ta=25° C unless otherwise specified)

Parameter	Symbol	Condition			Min.	Typ.	Max.	Unit
UVLO SECTION
Start Threshold Voltage	VSTART	VFB=GND			14	15	16	V

Stop Threshold Voltage	VSTOP	VFB=GND			8.2	8.8	9.4	V

OSCILLATOR SECTION

Initial Accuracy	FOSC	KA5H0265xRx			90	100	110	kHz
Initial Accuracy	FOSC	KA5H0280R			90	100	110	kHz
		KA5H0280R
Initial Accuracy	FOSC	KA5M0265xRx			61	67	73	kHz
Initial Accuracy	FOSC	KA5M0280R			61	67	73	kHz
		KA5M0280R
Initial Accuracy	FOSC	KA5L0265R			45	50	55	kHz
Frequency Change With Temperature (2)	∆ F/∆ T	-25° C ≤ Ta ≤ +85° C			-	± 5	± 10	%
Maximum Duty Cycle	Dmax	KA5H0265xRx			62	67	72	%
Maximum Duty Cycle	Dmax	KA5H0280R			62	67	72	%
		KA5H0280R
		KA5M0265xRx
Maximum Duty Cycle	Dmax	KA5M0280R			72	77	82	%
		KA5L0265R
FEEDBACK SECTION

Feedback Source Current	IFB	Ta=25° C, 0V ≤	Vfb ≤	3V	0.7	0.9	1.1	mA
Shutdown Feedback Voltage	VSD	Vfb ≤ 6.5V			6.9	7.5	8.1	V
Shutdown Delay Current	Idelay	Ta=25° C, 5V ≤	Vfb ≤	VSD	4	5	6	A

SOFT START SECTION

Soft Start Voltage	VSS	KA5H0265RC			4.7	5.0	5.3	V
Soft Start Current	ISS	KA5H0265RC			0.8	1.0	1.2	mA
Soft Start Current	ISS				0.8	1.0	1.2	mA

REFERENCE SECTION

Output Voltage (1)	Vref	Ta=25° C			4.80	5.00	5.20	V
Temperature Stability (1)(2)	Vref/∆ T	-25° C ≤ Ta ≤ +85° C			-	0.3	0.6	mV/° C
CURRENT LIMIT(SELF-PROTECTION)SECTION

Peak Current Limit	IOVER	KA5x02659RN			0.79	0.9	1.01	A

Peak Current Limit	IOVER	KA5x0265Rx			1.05	1.2	1.34	A
Peak Current Limit	IOVER	KA5x0280R			1.05	1.2	1.34	A
		KA5x0280R
PROTECTION SECTION

Over Voltage Protection	VOVP	VCC ≥ 24V			25	27	29	V

Thermal Shutdown Temperature (1)	TSD	-			140	160	-	° C
TOTAL DEVICE SECTION
Start-up Current	ISTART	VCC=14V			-	100	170	A

Operating Supply Current	IOPR	VCC ≤ 28			-	7	12	mA
(Control Part Only)	IOPR	VCC ≤ 28			-	7	12	mA
(Control Part Only)

Note:

1.These parameters, although guaranteed, are not 100% tested in production

2.These parameters, although guaranteed, are tested in EDS (wafer test) process

Fairchild Semiconductor KA5H0280R, KA5H0265RC, KA5H02659RN, KA5M0265R, KA5M02659RN Datasheet

KA5X02XX-SERIES

Typical Performance Characteristics

(These characteristic graphs are normalized at Ta=25° C)

Fig.1 Operating Frequency

	1.2
1.15
	1.1
1.05
Fosc	1
0.95
	0.9
0.85
	0.8
	-25	0	25	50	75	100	125	150
		Temperature [° C]

Figure 1. Operating Frequency

Fig.3 Operating Current

	1.2
1.15
	1.1
1.05
Iop	1
0.95
	0.9
0.85
	0.8
	-25	0	25	50	75	100	125	150
			Temperature [° C]

Figure 3. Operating Supply Current

Fig.5 Start up Current

1.5
1.3
Istart1.1
0.9
0.7
0.5
-25	0	25	50	75	100	125	150
		Temperature [° C]

Figure 5. Start up Current

	1.2	Fig.2 Feedback Source Current
	1.2
1.15
	1.1
1.05
Ifb	1
0.95
	0.9
0.85
	0.8
	-25	0	25	50	75	100	125	150
			Temperature [° C]

Figure 2. Feedback Source Current

Fig.4 Max Inductor Current

1.1
1.05
IIpeakover	1
0.95
0.9
0.85
0.8
	-25	0	25	50	75	100	125	150
			Temperature [° C]

Figure 4. Peak Current Limit

Fig.6 Start Threshold Voltage

1.15
1.1
1.05
Vstart 1
0.95
0.9
0.85
-25	0	25	50	75	100	125	150
		Temperature [° C]

Figure 6. Start Threshold Voltage

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