LT1020_03 Datasheet, PDF (12/16 Pages) Linear Technology – Micropower Regulator and Comparator

LT1020
TYPICAL APPLICATIO S
1 Amp Regulator with Precision Current Limit
V_IN
12V
2.2k
100k
8_–
4
LT1020
MJE2955
3
0.22µF
100k
2
7
1.2k
+
FB ¹¹
ISC
SENSE
0.03Ω
6
5
9
†_{MUST HAVE LOW ESR. SEVERAL 100µF}
CAPACITORS CAN BE PARALLELED
1N4148
270Ω
100k
100µF
220µF^†
V_OUT
5V
1A
R_L
1020 TA17
8_–
7₊
Logic Output on Dropout
V_IN
4
3
LT1020
6
5
9
2
1M
11
FB
13
1M
1M
0.001µF
V_OUT
5V
10µF
1020 TA18
“DROPOUT”
0V
V_IN
TTL COMPATIBLE
12
Charge Pump Negative Voltage Generator
V_IN
1M
51k
0.0033µF
8_–
7₊
3
5
6
9
1M
51k
V_OUT (NL) ≅ – (V_IN – 1V)
V_OUT (5mA) ≅ – (V_IN – 3V)
I_Q ≅ 300µA
2N3904
22k
10µF
1N5819
OR EQUIVALENT
–V_OUT
+ ^20µF
1020 TA19
sn1020 1020fcs