Datasheet

LT3571
5
3571fa
TYPICAL PERFORMANCE CHARACTERISTICS
Current Monitor Accuracy
vs Temperature V
MONIN
- V
APD
vs APD Current V
MONIN
– V
APD
vs Temperature
V
OUT
– V
MONIN
Threshold
vs Temperature Current Monitor Output vs V
MONIN
Current Monitor Accuracy
T
A
= 25°C, unless otherwise specifi ed.
TEMPERATURE (°C)
–50
V
OUT
– V
MONIN
THRESHOLD (mV)
0
50
75
–25
25
100
125
3571 G10
194
196
198
200
202
206
204
V
MONIN
= 50V
V
MONIN
(V)
10
18
I
MON
(µA)
20
20 30 5040 60 70
22
19
21
80
3571 G11
I
APD
= 100µA
INPUT CURRENT (µA)
0.1
–4
ERROR (%)
–2
0
2
1 10 1000100
4
–3
–1
1
3
10000
3571 G12
V
MONIN
= 75V
TEMPERATURE (°C)
–50
–6
ERROR (%)
–5
–3
–2
–1
2
1
0
50
75
–4
0
–25
25
100
125
3571 G13
V
MONIN
= 75V
250nA
10µA
2.5mA
APD CURRENT (µA)
0.1
4.80
V
MONIN
-V
APD
(V)
4.85
4.90
4.95
5.10
5.05
5.00
10
1000
3571 G14
V
MONIN
= 75V
TEMPERATURE (°C)
–50 1251007550250–25
4.9
V
MONIN
-V
APD
(V)
4.95
5
5.1
5.05
3571 G15
V
MONIN
= 75V
I
APD
= 1mA
FB vs CTRL
CTRL (V)
0 1.210.80.60.40.2
0
FB (V)
0.2
0.4
0.6
0.8
1
1.2
3571 G16
50ns/DIV
INPUT
RESPONSE
3571 G18
I
APD
= 1mA
T
FD
< 100ns
I
APD
= 10µA
Current Monitor Transient
Response (Falling Edge)
Current Monitor Transient
Response (Rising Edge)
50ns/DIV
INPUT
RESPONSE
3571 G17
I
APD
= 10µA
T
RD
< 100ns
I
APD
= 1mA