MAX8537 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8537
Maxim Integrated
MAX8537 Datasheet PDF : 23 Pages
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Dual-Synchronous Buck Controllers for Point-of-
Load, Tracking, and DDR Memory Power Supplies
Typical Operating Characteristics
(Circuit of Figure 1, TA = +25°C, 400kHz switching frequency, VIN = 12V, unless otherwise noted.)
VDDQ EFFICIENCY vs. LOAD CURRENT
100
95
VDDQ = 2.5V
90
SENSE RESISTOR = 0Ω
VIN = 12V
85
80
75
VDDQ = 1.8V
70
65
60
55
50
1
10
100
LOAD CURRENT (A)
VDDQ EFFICIENCY vs. LOAD CURRENT
100
SENSE RESISTOR = 3mΩ
95
VDDQ = 2.5V
VIN = 12V
90
85
80
75
VDDQ = 1.8V
70
65
60
55
50
1
10
100
LOAD CURRENT (A)
VDDQ vs. LOAD CURRENT
2.55
VIN = 12V
2.53
2.51
2.49
2.47
2.45
0
5
10
15
20
LOAD CURRENT (A)
VTT vs. LOAD CURRENT
1.30
VIN = 12V
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
0
3
6
9
12
15
LOAD CURRENT (A)
VTTR vs. LOAD CURRENT
1.30
VIN = 12V
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
0
5
10
15
20
25
LOAD CURRENT (mA)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
2.6
2.5
2.4
VDDQ
2.3
2.2
2.1
IOUT_VDDQ = 20A
IOUT_VTT = 12A
IOUT_VTTR = 15mA
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
VTT AND VTTR
1.2
12
13
14
INPUT VOLTAGE (V)
POWER-UP
MAX8537 toc07
V+
VIN
5V/div
VDDQ
1V/div
VTT
VDDQ
8.5V/div
VTTR
8.5V/div
VTT
4ms/div
VVTTR
POWER-DOWN
MAX8537 toc08
5V/div
4ms/div
2V/div
2V/div
2V/div
STARTUP AND SHUTDOWN
MAX8537 toc09
EN1/EN2
5V/div
1ms/div
VDDQ
2V/div
VTT
1V/div
VTTR
1V/div
_______________________________________________________________________________________ 5
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