MAX1957EUB+ Maxim Integrated Products, MAX1957EUB+ Datasheet - Page 6

• Manufacturer Part Number: MAX1957EUB+
• Description: IC CNTRLR PWM BUCK 10-UMAX
• Manufacturer: Maxim Integrated Products
• Type: Step-Down (Buck)r

Specifications of MAX1957EUB+

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.4 ~ 4.73 V
• Current - Output: 3A
• Frequency - Switching: 300kHz
• Voltage - Input: 3 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Power - Output: 444mW
• Duty Cycle (max): 89 %
• Output Voltage: 0.4 V to 4.73 V
• Output Current: 3000 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 300 KHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Boost, Buck
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Cost, High-Frequency, Current-Mode PWM
Buck Controller
6
(T
A
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
AC-COUPLED
AC-COUPLED
I
I
V
LOAD
V
LOAD
OUT
OUT
LOAD TRANSIENT
LOAD TRANSIENT
MAX1953
MAX1957
400 s/div
400 s/div
CIRCUIT OF FIGURE 1
MAX1953 toc15
MAX1953 toc17
Typical Operating Characteristics (continued)
100mV/div
3A
1.5A
50mV/div
3A
-3A
AC-COUPLED
I
V
LOAD
OUT
DH
I
DL
LX
LX
NO-LOAD SWITCHING WAVEFORMS
LOAD TRANSIENT
MAX1953
MAX1954
400 s/div
2 s/div
MAX1953 toc18
MAX1953 toc16
100mV/div
2.5A
2A/div
5V/div
5V/div
5V/div
5A