MAX1858EEG+ Maxim Integrated Products, MAX1858EEG+ Datasheet - Page 5

• Manufacturer Part Number: MAX1858EEG+
• Description: IC CNTRLR BUCK DUAL 24-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1858EEG+

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 0 ~ 18 V
• Current - Output: 10A
• Frequency - Switching: 100kHz ~ 600kHz
• Voltage - Input: 4.75 ~ 23 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Power - Output: 762mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SOFT-START AND SOFT-STOP WAVEFORM
(Circuit of Figure 1, V
Controller with Power Sequencing and POR
1ms/div
_______________________________________________________________________________________
EXTERNALLY SYNCHRONIZED
IN
Dual 180° Out-of-Phase PWM Step-Down
CKO OUTPUT WAVEFORM
SWITCHING WAVEFORM
= 12V, T
MAX1858 toc07
400ns/div
400ns/div
A
5V
V
0V
1V/div
0V
V
V
1V/div
0V
= +25°C, unless otherwise noted.)
EN
OUT2
OUT1
SYNC = V
L
MAX1858 toc10
MAX1858 toc12
Typical Operating Characteristics (continued)
5V
V
0V
5V
V
0V
10V
V
0V
V
10mV/div
AC-COUPLED
5V
V
0V
10V
V
0V
V
10mV/div
SYNC
CK0
LX1
OUT1
CK0
LX1
OUT1
RESET TIMEOUT
100ms/div
5V/div
MAX1858 toc08
FOLDBACK AND RECOVERY
SHORT-CIRCUIT CURRENT
EN
0V
0V
V
0V
V
0V
CKO OUTPUT WAVEFORM
V
OUT1
RST
OUT2
SHORT
V
OUT2
400ns/div
SYNC = GND
OUT-OF-PHASE WAVEFORM
MAX1858 toc11
MAX1858 toc13
1µs/div
5V
V
0V
10V
V
0V
V
10mV/div
AC-COUPLED
I
V
V
I
OUT1
OUT2
CK0
LX1
OUT1
OUT1
OUT2
= 10A (5A/div)
= 10A (5A/div)
= 1.8V (1V/div)
= 2.5V (1V/div)
MAX1858 toc09
V
20mV/div
12V
V
0V
12V
V
0V
V
20mV/div
OUT1
LX1
LX2
OUT2
5