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LR645 Datasheet(PDF) 2 Page - Supertex, Inc

Part # LR645
Description  High Input Voltage SMPS Start-up / Linear Regulator
PDF  4 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

LR645 Datasheet(HTML) 2 Page - Supertex, Inc

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2
+
–
VOUT
GND
Gate
VIN
Trim
Thermal Characteristics
Package
Power Dissipation
θ
jc
θ
ja
@ T
A = 25°C
°C/W
°C/W
SO-8
0.31W
156
400†
TO-92
0.74W
125
170
TO-220
1.8W
8.3
70
TO-243AA
1.6W
15
78†
†
Mounted on FR5 board, 25mm x 25mm x 1.57mm.
Significant P
D increase possible on ceramic substrate.
Block Diagram
Symbol
Parameter
Min
Typ
Max
Unit
Conditions
V
OUT
Output Voltage
9.3
10
10.7
V
No load
V
OUT
Output Voltage over Temperature 1
9.0
10
11.5
V
T
J = -40°C ≤ to + 125°C, No load
∆V
OUT
Line Regulation
40
200
mV
V
IN=15V to 400V, No load
∆V
OUT
Load Regulation
150
400
mV
V
IN=50V, IOUT=0 to 3.0mA
VIN
Operating Input Voltage Range
15
450
V
I
INQ
Input Quiescent Current
50
150
µA
No Load
I
OFF
V
IN Off-State Leakage Current
0.1
10
µAV
AUX≥VOUT+1V applied to VOUT pin
IAUX
Input Current to VOUT
200
µAV
AUX≥VOUT+1V applied to VOUT pin
∆V
OUT/∆VIN
Ripple Rejection Ratio 1
50
60
dB
120Hz, No Load
e
n
Noise voltage 1
25
µV
0.01 to 100KHz
IPEAK
Output Peak Current 2
30
mA
COUT = 10µF, VIN = 400V
V
AUX
External Voltage Applied to V
OUT
13.2
V
Electrical Characteristics
Test conditions unless otherwise specified: T
A = 25°C; VIN = 15 to 450V, COUT = 0.01µF
Symbol
Parameter
Min
Typ
Max
Unit
Conditions
V
OUT
Output Voltage Trim Range1
8
12
V
No load
∆V
OUT
Load Regulation at 8V trim1
200
400
mV
V
IN=15V, IOUT=0 to 1.0mA
∆V
OUT
Load Regulation at 12V trim1
100
400
mV
VIN=50V, IOUT=0 to 3.0mA
Notes:
1. Guaranteed by design, not tested in production.
2. Pulse test duration < 1msec, Duty cycle < 2%
8-pin, adjustable output voltage version only.
Test conditions unless otherwise specified: T
A = 25°C; VIN = 15 to 450V, COUT = 0.01µF
LR645



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