LT1501CS8-5 データシートの表示（PDF） - Linear Technology
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LT1501CS8-5 Datasheet PDF : 16 Pages
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LT1500/LT1501
TYPICAL PERFORMANCE CHARACTERISTICS
Burst Mode Threshold
120
TJ = 25°C
LOAD CURRENT IS
100 REDUCED UNTIL Burst
Mode OPERATION STARTS
80
VOUT = 3.3V
60
VOUT = 5V
40
VOUT = 12V
20
Switch Saturation Voltage
1.0
TJ = 25°C
0.8
0.6
0.4
0.2
Peak-to-Peak Inductor Ripple
Current
220
VIN = 3.3V
200 VOUT = 5V
L = 50µH
180
NOTE THAT RIPPLE CURRENT
INCREASES WITH SMALLER
INDUCTORS DUE TO
160 PROPAGATION DELAY
IN THE CURRENT
140 COMPARATOR
120
100
0
0
2
4
6
8
10 12
INPUT VOLTAGE (V)
LT1500/01 • TPC01
0
0
0.2 0.4 0.6 0.8 1.0
SWITCH CURRENT (A)
LT1500/01 • TPC06
80
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
AVERAGE SWITCH CURRENT
LT1500/01 • TPC07
Quiescent Input Supply Current
400
TJ = 25°C
350 VFB OR VOUT HELD 5% HIGH,
SO THAT Burst Mode
300 OPERATION IS ACTIVATED.
DOES NOT INCLUDE
250 OUTPUT DIVIDER CURRENT
200
150
100
50
0
0
5
10
15
20
25
INPUT VOLTAGE (V)
LT1500/01 • TPC04
Input Current in Shutdown
20
TJ = 25°C
VSHDN = 0V
16
12
8
4
Low-Battery Output Saturation
Voltage
0.6
TJ = 25°C
0.5 VLBI ≤ 1.2V
0.4
0.3
0.2
0.1
0
0
1
2
3
4
56
SINK CURRENT (mA)
LT1500/01 • TPC02
Shutdown Input Current vs
Feedback Pin Voltage
140
TJ = 25°C
120 VIN = 5V
ADJUSTABLE PARTS ONLY.
100
FIXED VOLTAGE PARTS DO
NOT SHOW SHUTDOWN
CURRENT INCREASE WITH
80 FEEDBACK VOLTAGE
60
40
20
0
0
5
10
15
20
25
INPUT VOLTAGE (V)
LT1500/01 • TPC03
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
FEEDBACK PIN VOLTAGE (V)
LT1500/01 • TPC05
6
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