MAX8743 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
View to exact match
MAX8743 Datasheet PDF : 27 Pages
| |||
Dual, High-Efficiency, Step-Down
Controller with High Impedance in Shutdown
ABSOLUTE MAXIMUM RATINGS (Note 1)
V+ to AGND..............................................................-0.3 to +30V
VCC to AGND............................................................-0.3V to +6V
VDD to PGND............................................................-0.3V to +6V
AGND to PGND .....................................................-0.3V to +0.3V
PGOOD, OUT_ to AGND..........................................-0.3V to +6V
OVP, UVP, ILIM_, FB_, REF,
SKIP, TON, ON_ to AGND......................-0.3V to (VCC + 0.3V)
DL_ to PGND ..............................................-0.3V to (VDD + 0.3V)
BST_ to AGND........................................................-0.3V to +36V
CS_ to AGND.............................................................-6V to +30V
DH1 to LX1 ..............................................-0.3V to (VBST1 + 0.3V)
LX_ to BST_ ..............................................................-6V to +0.3V
DH2 to LX2 ..............................................-0.3V to (VBST2 + 0.3V)
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (TA = +70°C)
28-Pin QSOP (derate 10.8mW/°C above +70°C)........860mW
36-Pin 6mm ✕ 6mm Thin QFN
(derate 26.3mW/°C above +70°C) .............................2105mW
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
Note 1: For the MAX8743EEI, AGND and PGND refer to a single pin designated GND.
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
(Circuit of Figure 1, VDD = VCC = 5V, SKIP = AGND, V+ = 15V, TA = 0°C to +85°C, typical values are at +25°C, unless otherwise
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
PWM CONTROLLERS
Input Voltage Range
DC Output Voltage OUT1
(Note 2)
V+
VCC/VDD
VOUT1
Battery voltage, V+
VCC, VDD
V+ = 2V to 28V, ILOAD
= 0 to 8A, SKIP = VCC,
+25°C to +85°C
V+ = 2V to 28V, ILOAD
= 0 to 8A, SKIP = VCC,
0°C to +85°C
FB1 to AGND
FB1 to VCC
FB1 to OUT1
FB1 to AGND
FB1 to VCC
FB1 to OUT1
2
28
V
4.5
5.5
1.782 1.8 1.818
1.485 1.5 1.515
0.99
1
1.01
V
1.773 1.8 1.827
1.477 1.5 1.523
0.985
1
1.015
DC Output Voltage OUT2
(Note 2)
VOUT2
V+ = 4.5V to 28V,
ILOAD = 0 to 4A,
SKIP = VCC,
+25°C to +85°C
V+ = 4.5V to 28V,
ILOAD = 0 to 4A,
SKIP = VCC,
0°C to +85°C
FB2 to AGND
FB2 to OUT2
FB2 to AGND
FB2 to OUT2
2.475 2.5 2.525
0.99
1
1.01
V
2.463 2.5 2.537
0.985
1
1.015
Output Voltage Adjust Range
Dual-Mode Threshold, Low
OUT1, OUT2
OVP, FB_
1
5.5
V
0.05
0.1
0.15
V
Dual-Mode Threshold, High
OUT_ Input Resistance
FB_ Input-Bias Current
Soft-Start Ramp Time
OVP, ILIM_
ROUT1
ROUT2
IFB
FB1
VOUT1 = 1.5V
VOUT2 = 2.5V
Zero to full ILIM
VCC -
1.5
VCC -
0.4
V
1.9
2.0
2.1
75
kΩ
100
-0.1
+0.1
µA
1700
µs
2 _______________________________________________________________________________________
Share Link: 