LT1959 データシートの表示（PDF） - Linear Technology
部品番号
コンポーネント説明
メーカー
LT1959 Datasheet PDF : 24 Pages
| |||
LT1959
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Input Voltage
with 3.3V Output
4.7
4.5
4.3
4.1
3.9
3.7
3.5
3.3
1
10
100
LOAD CURRENT (mA)
1000
1959 G01
Shutdown Pin Bias Current
– 500
– 400
AT 0.37V SHUTDOWN THRESHOLD.
AFTER SHUTDOWN, CURRENT
DROPS TO A FEW µA
– 300
– 200
–8
AT 2.38V LOCKOUT THRESHOLD
–4
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1959 G04
Shutdown Supply Current
70
VIN = 10V
60
50
40
30
20
10
0
0
0.1
0.2
0.3
0.4
SHUTDOWN VOLTAGE (V)
1959 G07
Switch Peak Current Limit
6.5
6.0
TYPICAL
5.5
5.0
MINIMUM
4.5
4.0
3.5
3.0
0
20
40
60
80 100
DUTY CYCLE (%)
1959 G02
Lockout and Shutdown
Thresholds
2.40
LOCKOUT
2.36
Feedback Pin Voltage
1.215
1.210
1.205
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1959 G03
Shutdown Supply Current
25
VSHDN = 0V
20
2.32
15
0.8
START-UP
0.4
SHUTDOWN
0
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
1959 G05
10
5
0
0
5
10
INPUT VOLTAGE (V)
15
1959 G06
Error Amplifier Transconductance
2500
Error Amplifier Transconductance
3000
200
2000
PHASE
2500
150
1500
1000
2000
GAIN
( ) 1500 VFB 2 × 10–3
ROUT
200k
100
VC
COUT
12pF
50
500
0
–50 –25 0 25 50 75 100 125
JUNCTION TEMPERATURE (°C)
1959 G08
1000 ERROR AMPLIFIER EQUIVALENT CIRCUIT
0
RLOAD = 50Ω
500
100
1k
10k
100k
FREQUENCY (Hz)
–50
1M 10M
1959 G09
4
Share Link: 