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
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
IN
= 5V, V
BST
- V
LX
= 5V,
T
A
= 0°C to +85°C,
unless otherwise noted.)
PARAMETER
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
OUT
)
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
MAX1954A
Measured at DH
V
COMP
= 1.25V, LX = GND, V
BST
= V
IN
= 3.3V
240
89
300
91
2.5
360
93
3
kHz
%
%
V
PGND
- V
LX
V
FB
= 0.8V
V
FB
= 0V
V
FB
= 0.9V
-0.1
0.80
3.15
110
21
3.5
135
36
-1.0
70
+0.8
110
200
50
500
+1.5
2.36
3.85
145
51
+1.0
160
%
µS
V/ V
NA
V
V
V/V
mV
Maximum output voltage depends on external components
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Analogue and Mixed Signal
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