MAX1536ETI-T View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
MAX1536ETI-T
Maxim Integrated
MAX1536ETI-T Datasheet PDF : 19 Pages
| |||
3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-
Down Regulator with Dynamic Output Voltage Control
Typical Operating Characteristics (continued)
(MAX1536 Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. OUTPUT CURRENT
(VIN = 3.3V, L = 1.2µH)
1.806
RTOFF = 75kΩ
1.804
1.802
1.800
1.798
IDLE MODE
PWM MODE
1.796
1.794
0.001
0.01
0.1
1
10
OUTPUT CURRENT (A)
EFFICIENCY vs. OUTPUT CURRENT
(VOUT = 1.8V, fSW = 300kHz)
100
90
80
70
VIN = 3.3V
60
L = 2.2µH
50
RTOFF = 147kΩ
40
30
20
10
0
0.001
VIN = 5V
L = 3.3µH
RTOFF = 221kΩ
PWM MODE
IDLE MODE
0.01
0.1
1
10
OUTPUT CURRENT (A)
EFFICIENCY vs. OUTPUT CURRENT
(VIN = 3.3V, VOUT = 1.8V)
100
90
80
70
60
50
40
30
20
10
0
0.001
L = 3.3µH
RTOFF = 178kΩ
fSW ≈ 250kHz
L = 1.5µH
RTOFF = 85kΩ
fSW ≈ 500kHz
L = 0.8µH
RTOFF = 41.2kΩ
fSW ≈ 1000kHz
PWM MODE
IDLE MODE
0.01
0.1
1
10
OUTPUT CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (PWM MODE)
25
1.0 MAX1536 toc08
IIN
20
VOUT = 1.8V
0.8
15
0.6
10
0.4
ICC
5
0.2
0
0
3.0
3.5
4.0
4.5
5.0
INPUT VOLTAGE (V)
SWITCHING FREQUENCY vs. OUTPUT CURRENT
1000
900
VIN = 5.0V
VOUT = 1.8V
800
700
600
500
400
VIN = 3.3V
300
200
100
0
0
PWM MODE
IDLE MODE
1
2
3
4
5
OUTPUT CURRENT (A)
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (IDLE MODE)
1.05
350 MAX1536 toc09
1.04
VOUT = 1.8V 345
1.03
340
1.02
335
1.01
330
1.00
IIN
0.99
0.98
325
320
ICC
315
0.97
310
0.96
305
0.95
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
300
5.0
6 _______________________________________________________________________________________
Share Link: 