MAX1954AEUB Maxim Integrated Products, MAX1954AEUB Datasheet - Page 4

• Manufacturer Part Number: MAX1954AEUB
• Description: Current Mode PWM Controllers
• Manufacturer: Maxim Integrated Products

Specifications of MAX1954AEUB

• Number Of Outputs: 1
• Duty Cycle (max): 93 %
• Output Voltage: 0.8 V to 4.95 V
• Output Current: 25000 mA
• Mounting Style: SMD/SMT
• Package / Case: uSOP-10
• Switching Frequency: 360 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, Current-Mode PWM Buck
Controller with Foldback Current Limit
ELECTRICAL CHARACTERISTICS (continued)
(V
Note 1: HSD and IN are externally connected for applications where HSD < 5.5V.
Note 2: Specifications to -40 C are guaranteed by design and not production tested.
4
Current-Sense Amplifier
Voltage Gain
Current-Limit Threshold
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
FET DRIVERS
DH, DL Output Low Voltage
DH, DL Output High Voltage
DH Pullup/Pulldown,
DL Pullup On-Resistance
DL Pulldown On-Resistance
LX, BST, HSD Leakage Current
SHUTDOWN CONTROL
COMP Logic-Level Low
COMP Logic-Level High
COMP Pullup Current
IN
_______________________________________________________________________________________
= 5V, V
PARAMETER
BST
- V
LX
= 5V, T
A
= -40 C to +85 C, unless otherwise noted.) (Note 2)
V
Measured at DH
V
I
I
V
3V < V
3V < V
SINK
SOURCE
PGND
COMP
BST
= 10mA
= 18.7V, V
IN
IN
- V
= 1.25V, LX = GND, V
= 10mA
< 5.5V
< 5.5V
LX
, MAX1954A
LX
= 13.2V, V
CONDITIONS
IN
BST
= 5.5V, V
= V
V
V
IN
FB
FB
= 3.3V
= 0.8V
= 0V
HSD
= 13.2V
V
V
3.15
IN
MIN
110
240
BS T
0.8
21
89
- 0.1V or
- 0.1V
MAX
3.85
0.25
145
360
100
0.1
51
93
30
3
3
2
UNITS
kHz
V/V
mV
µA
µA
%
%
V
V
V
V