MAX1954AEUB Maxim Integrated Products, MAX1954AEUB Datasheet - Page 2

• 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

ABSOLUTE MAXIMUM RATINGS
IN, FB to GND...........................................................-0.3V to +6V
LX to BST..................................................................-6V to +0.3V
BST to GND ............................................................-0.3V to +20V
DH to LX ................................................... -0.3V to (V
DL, COMP to GND.......................................-0.3V to (V
HSD to GND..............................................................-0.3V to 14V
PGND to GND .......................................................-0.3V to +0.3V
Low-Cost, Current-Mode PWM Buck
Controller with Foldback Current Limit
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
2
GENERAL
Operating Input Voltage Range
HSD Voltage Range
Quiescent Supply Current
Standby Supply Current
Undervoltage-Lockout Trip Level
DC-DC CONTROLLER
Output-Voltage Adjust Range
(V
ERROR AMPLIFIER
FB Regulation Voltage
Transconductance
Voltage Gain
FB Input Leakage Current
FB Input Common-Mode Range
COMP Output-Voltage Swing
Current-Sense Amplifier
Voltage Gain
Current-Limit Threshold
OSCILLATOR
Switching Frequency
Maximum Duty Cycle
Minimum Duty Cycle
IN
OUT
_______________________________________________________________________________________
= 5V, V
)
PARAMETER
BST
- V
LX
= 5V, T
A
= 0 C to +85 C, unless otherwise noted.)
(Note 1)
V
V
COMP = GND
Falling V
Maximum output voltage depends on external components
and maximum duty cycle
V
V
MAX1954A
Measured at DH
V
FB
IN
FB
PGND
COMP
= V
= 1.5V
= 0.9V
BST
- V
= 1.25V, LX = GND, V
IN
LX
, 50mV (typ) hysteresis
= 5.5V, V
BST
IN
+ 0.3V)
+ 0.3V)
HSD
CONDITIONS
= 13.2V, LX = unconnected,
BST
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40 C to +85 C
Junction Temperature ......................................................+150 C
Storage Temperature Range ............................+65 C to +150 C
Lead Temperature (soldering, 10s) .................................+300 C
= V
10-Pin µMAX (derate 5.6mW/ C above +70 C) ...........444mW
V
V
IN
FB
FB
= 3.3V
= 0.8V
= 0V
0.80
3.15
MIN
-1.0
-0.1
110
240
3.0
3.0
2.5
0.8
70
21
89
A
= +70 C)
+0.8
TYP
110
200
135
300
2.7
3.5
2.5
50
36
91
1
MAX
13.2
+1.0
+1.5
2.36
3.85
160
500
145
360
5.5
2.9
51
93
2
2
3
UNITS
kHz
V/ V
V / V
mA
mA
mV
NA
µS
%
%
%
V
V
V
V
V
V