LYT1402-1604
Absolute Maximum Ratings(1,3)
DRAIN Pin Voltage: LYT1x0x............................-0.3 V to 725 V Notes:
DRAIN Pin Peak Current: LYT1x02 ...........................1.05 A (1.3 A)(1) 1. The higher peak Drain current (in parentheses) is allowed while the
LYT1x03 .............................2.1 A (2.6 A)(1)
LYT1x04 ............................ 2.8 A (3.5 A)(1)
Drain voltage is simultaneously less than 400 V for 725 V integrated
MOSFET.
BYPASS Pin Voltage ...................................................-0.3 V to 6.0 V 2. In case SOURCE pin is open, -0.7 V between FEEDBACK pin and
MULTIFUNCTION, FEEDBACK Pin Voltage................ -0.45 V to 7.0 V(2)
SOURCE pin is observed with no degradation in performance.
Lead Temperature ................................................................ 260 °C 3. The Absolute Maximum Ratings specified may be applied, one at a
Storage Temperature...................................................-65 to 150 °C
time without causing permanent damage to the product. Exposure
to Absolute Maximum Ratings for extended periods of time may
affect product reliability.
Operating Junction Temperature................................-40 to 150 °C(4)
4. Normally limited by internal circuitry.
Thermal Resistance
Thermal Resistance: SO-8 Package:
Notes:
(qJA)................................100 °C/W(2), 80 °C/W(3) 1. Measured on the SOURCE pin close to plastic interface.
(qJC)(1) ................................................30 °C/W 2. Soldered to 0.36 sq. inch (232 mm2) 2 oz. (610 g/m2) copper clad,
with no external heat sink attached.
3. Soldered to 1 sq. in. (645 mm2), 2 oz, (610 g/m2) copper clad.
Conditions
SOURCE = 0 V
TJ = -40 °C to 125 °C
Parameter
Symbol
Min
Typ
Max
Units
(Unless Otherwise Specified)
Control Functions
Minimum Switching
Frequency
fMIN
18
20
40
22
45
kHz
ms
Maximum Switch
ON-Time
TON(MAX)
TON(MIN)
VFB(REF)
VTH(DZ)
TCC(MAX)
37.5
1.012
-285
Minimum Switch
ON-Time
1.1
-279
1.25
-273
ms
FEEDBACK Pin
Reference Voltage
TJ = 25 °C
See Note C
mV
V
Dead Zone Detect
Threshold
0.3 ×
VFB(REF)
Maximum Constant
Current Zone
6
ms
Forced Minimum
Constant Current Zone
TCC(MIN)
ISBY
1.2
ms
Standby (MOSFET not switching)
LYT1x02
180
680
785
850
-4.5
-2
mA
BYPASS Pin
Supply Current
IDSS
MOSFET Switching
LYT1x03
LYT1x04
mA
ICH1
ICH2
VBP
VBP = 0.0 V, VDS ≥ 36 V
VBP = 5.0 V, VDS ≥ 36 V
-10
-6
mA
mA
V
BYPASS Pin
Charge Current
BYPASS Pin Voltage
5.075
5.22
5.35
7
Rev. B 07/16
www.power.com
POWERINT [ Power Integrations ]
