LNK520 Datasheet, PDF (13/20 Pages) Power Integrations, Inc. – Energy Efficient, CV or CV/CC Switcher for Very Low Cost Adapters and Chargers

LNK520
ABSOLUTE MAXIMUM RATINGS^(1,4)
DRAIN Voltage .................................................. -0.3 V to 700 V Notes:
DRAIN Peak Current......................................400 mA 1. All voltages referenced to SOURCE, T_A = 25 °C.
CONTROL Voltage ................................................ -0.3 V to 9 V 2. Normally limited by internal circuitry.
CONTROL Current (not to exceed 9 V)............100 mA 3. 1/16 in. from case for 5 seconds.
Storage Temperature .......................................... -65 °C to 150 °C 4. Maximum ratings specified may be applied, one at a time,
Operating Junction Temperature⁽²⁾ ..................... -40 °C to 150 °C without causing permanent damage to the product.
Lead Temperature⁽³⁾ ........................................................260 °C Exposure to Absolute Maximum Rating conditions for
extended periods of time may affect product reliability.
THERMAL IMPEDANCE
Thermal Impedance: P or G Package:
(θ_JA) ........................... 70 °C/W⁽²⁾; 60 °C/W⁽³⁾
(θ_JC)⁽¹⁾ ............................................... 11 °C/W
Notes:
1. Measured on pin 2 (SOURCE) close to plastic interface.
2. Soldered to 0.36 sq. in. (232 mm²), 2 oz. (610 g/m²) copper clad.
3. Soldered to 1 sq. in. (645 mm²), 2 oz. (610 g/m²) copper clad.
Parameter
Symbol
CONTROL FUNCTIONS
Switching
Frequency
f_OSC
Low Switching
Frequency
Duty Cycle at Low
Switching
Frequency
Low Frequency
Duty Cycle Range
Maximum Duty
Cycle
f_OSC(LOW)
DC_LF
DC_(RANGE)
DC_MAX
PWM Gain
CONTROL Pin
Current at 30%
Duty Cycle
CONTROL Pin
Voltage
Dynamic
Impedance
DC_REG
I_DCT
V_C(IDCT)
Z_C
Conditions
SOURCE = 0 V; T_J = -40 to 125 °C
See Figure 14
(Unless Otherwise Specified)
I_C = I_DCT, T_J = 25 °C
Duty Cycle = DC_LF
T_J = 25 °C
Frequency Switching from f_OSC to
f , _OSC(LOW) T_J = 25 °C
Frequency = f , _OSC(LOW) T_J = 25 °C
I_C = 1.5 mA
I_C = I_DCT, T_J = 25 °C
T_J = 25 °C
See Figure 4
I_C = I_DCT
I_C = I_DCT, T_J = 25 °C
Min
34.5
24
2.7
2.0
74
-0.37
2.06
5.5
60
Typ
42
30
4.1
3.5
77
-0.27
2.15
5.75
90
Max Units
49.5
kHz
36
kHz
5.5
%
5.0
%
80
-0.17
%
%/µA
2.25
mA
6
V
120
Ω
13 ^E
2/05