MAX8537EEI+ Maxim Integrated Products, MAX8537EEI+ Datasheet - Page 6

• Manufacturer Part Number: MAX8537EEI+
• Description: IC CNTRLR BUCK DUAL 28-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX8537EEI+

• Applications: Controller, DDR
• Voltage - Input: 4.5 ~ 23 V
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 3.6 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-QSOP
• Output Voltage: 0.8 V to 3.6 V
• Output Current: 30 A
• Input Voltage: 4.5 V to 23 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Dual-Synchronous Buck Controllers for Point-of-
Load, Tracking, and DDR Memory Power Supplies
(Circuit of Figure 1, T
6
_______________________________________________________________________________________
I
I
OUT
OUT
_V
_V
DDQ
TT
= 8A
= 20A
POWER-OK
150
125
100
-25
-50
75
50
25
-8A
2ms/div
0
8A
10
2
A
V
V
= +25°C, 400kHz switching frequency, V
TT
TT
LOAD-TRANSIENT RESPONSE
= 1.25V AT 12A BODE PLOT,
10
3
MAX8537 toc10
di/dt = 1A/µs
200µs/div
V
IN
10
= 12V
Hz
4
V
2V/div
POK1
5V/div
V
1V/div
POK2
5V/div
DDQ
TT
I
I
OUT
OUT
_V
_V
10
DDQ
TTR
5
MAX8537 toc13
= 15mA
= 20A
Typical Operating Characteristics (continued)
V
10
TT
6
V
AC-COUPLED
50mV/div
V
AC-COUPLED
50mV/div
V
AC-COUPLED
50mV/div
V
10A/div
STARTUP AND SHUTDOWN
TT
TTR
DDQ
TT
_I
OUT
2ms/div
IN
= 12V, unless otherwise noted.)
V
MAX8537 toc11
180
160
140
120
100
V
-20
-40
OUT2
80
60
40
20
OUT1
0
I
I
L1
IN
100
V
SHORT CIRCUIT AND RECOVERY
DDQ
EN2
5V/div
V
1V/div
V
1V/div
V
2V/div
TT
TTR
DDQ
= 2.5V AT 20A BODE PLOT,
1k
20A
10A
V
10ms/div
IN
10k
kHz
= 12V
V
V
TT
TTR
_I
= 15mA
OUT
V
DDQ
100k
= 12A
AND V
di/dt = 5A/µs
LOAD TRANSIENT
MAX8537 toc16
200µs/div
TT
TRACKING
1M
1V/div
1V/div
10V/div
5A/div
MAX8537 toc12
V
100mV/div
V
50mV/div
V
50mV/div
V
10A/div
DDQ
TT
TTR
DDQ
_I
OUT