MAX1715 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1715 Datasheet PDF : 25 Pages
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Ultra-High Efficiency, Dual Step-Down
Controller for Notebook Computers
ABSOLUTE MAXIMUM RATINGS
V+ to AGND..............................................................-0.3 to +30V
VDD , VCC to AGND ..................................................-0.3V to +6V
PGND to AGND or VCC to VDD ...........................................±0.3V
PGOOD, OUT_ to AGND..........................................-0.3V to +6V
ILIM_, FB_, REF, SKIP, TON,
ON_ to AGND ...........................................-0.3V to (VDD + 0.3V)
DL_ to PGND ..............................................-0.3V to (VDD + 0.3V)
BST_ to AGND........................................................-0.3V to +36V
DH1 to LX1 ...............................................-0.3V to (BST1 + 0.3V)
DH2 to LX2 ...............................................-0.3V to (BST2 + 0.3V)
LX1 to BST1..............................................................-6V to +0.3V
LX2 to BST2..............................................................-6V to +0.3V
REF Short Circuit to AGND.........................................Continuous
Continuous Power Dissipation (TA = +70°C)
28-Pin QSOP (derate 8.0mW/°C above +70°C).....640mW/°C
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
(Circuit of Figure 1, 4A components from Table 1, VCC = VDD = +5V, SKIP = AGND, V+ = 15V, TA = 0°C to +85°C, unless otherwise
noted.) (Note 1)
PARAMETER
Input Voltage Range
Output 1 Error Comparator
Threshold (DC Output Voltage
Accuracy) (Note 2)
Output 1 Error Comparator
Threshold (DC Output Voltage
Accuracy) (Note 2)
Battery voltage, V+
VDD, VCC
CONDITIONS
V+ = 2V to 28V,
SKIP = VCC, TA = +25°C
ILOAD = 0 to 4A
V+ = 2V to 28V,
SKIP = VCC, TA = 0°C to +85°C
ILOAD = 0 to 4A
FB1 = OUT1
FB1 = AGND
FB1 = VCC
FB1 = OUT1
FB1 = AGND
FB1 = VCC
MIN
2
4.5
0.99
1.782
3.267
0.985
1.773
3.250
TYP
1.00
1.8
3.3
1.00
1.8
3.3
MAX
28
5.5
1.01
1.818
3.333
1.105
1.827
3.350
UNITS
V
V
V
Output 2 Error Comparator
Threshold (DC Output Voltage
Accuracy) (Note 2)
V+ = 2V to 28V,
SKIP = VCC, TA = +25°C
ILOAD = 0 to 4A
FB2 = OUT2
FB2 = GND
0.99 1.00 1.01
V
2.475 2.5 2.525
Output 2 Error Comparator
Threshold (DC Output Voltage
Accuracy) (Note 2)
Load Regulation Error
Line Regulation Error
Output Voltage Range
OUT_ Input Resistance
FB_ Input Bias Current
Soft-Start Ramp Time
On-Time (PWM1)
On-Time (PWM2)
V+ = 2V to 28V,
SKIP = VCC, TA = 0°C to +85°C
ILOAD = 0 to 4A
FB2 = OUT2
FB2 = GND
ILOAD = 0 to 4A, each output
VCC = 4.5V to 5.5V, V+ = 4.5V to 28V
Adjustable mode, each output
FB_ = AGND
VOUT_ = AGND
Rising edge of ON_ to full current limit
V+ = 24V, OUT1 = 2V
TON = GND
TON = REF
TON = open
TON = VDD
TON = GND
V+ = 24V, OUT2 = 2V
TON = REF
TON = open
TON = VDD
0.985 1.00 1.105
V
2.463 2.5 2.538
0.4
%
0.2
%
1
5.5
V
75k
Ω
-0.1
0.1
µA
1.7
ms
112
136
160
142
173
205
ns
210
247
280
300
353
407
154
182
215
198
234
270
ns
292
336
380
420
484
550
2 _______________________________________________________________________________________
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