MAX1717 查看數據表（PDF） - Maxim Integrated
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MAX1717 Datasheet PDF : 33 Pages
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Dynamically Adjustable, Synchronous
Step-Down Controller for Notebook CPUs
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +30V
VCC, VDD to GND .....................................................-0.3V to +6V
D0–D4, A/B, VGATE, to GND ..................................-0.3V to +6V
SKP/SDN to GND ...................................................-0.3V to +16V
ILIM, FB, FBS, CC, REF, GNDS, TON,
TIME to GND ..........................................-0.3V to (VCC + 0.3V)
DL to GND ..................................................-0.3V to (VDD + 0.3V)
BST to GND ............................................................-0.3V to +36V
DH to LX .....................................................-0.3V to (BST + 0.3V)
LX to BST..................................................................-6V to +0.3V
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation
24-Pin QSOP (derate 9.5mW/°C above +70°C)..........762mW
Operating Temperature Range ..........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature.........................................-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, V+ = +15V, VCC = VDD = SKP/SDN = +5V, VOUT = 1.6V, TA = 0°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX
PWM CONTROLLER
Input Voltage Range
Battery voltage, V+
VCC, VDD
2
28
4.5
5.5
DC Output Voltage Accuracy
(Note 1)
V+ = 4.5V to 28V, DAC codes from 1.3V to 2V
-1
includes load
regulation error
DAC codes from 0.925V to 1.275V -1.2
1
1.2
Remote Sense Voltage Error
Line Regulation Error
FB Input Resistance
FBS Input Bias Current
GNDS Input Bias Current
TIME Frequency Accuracy
On-Time (Note 2)
Minimum Off-Time (Note 2)
Minimum Off-Time (Note 2)
BIAS AND REFERENCE
Quiescent Supply Current (VCC)
Quiescent Supply Current (VDD)
Quiescent Battery Supply
Current (V+)
Shutdown Supply Current (VCC)
Shutdown Supply Current (VDD)
Shutdown Battery Supply
Current (V+)
Reference Voltage
FB to FBS or GNDS to GND = 0 to 25mV
VCC = 4.5V to 5.5V, VBATT = 4.5V to 28V
150kHz nominal, RTIME = 120kΩ
380kHz nominal, RTIME = 47kΩ
38kHz nominal, RTIME = 470kΩ
V+ = 5V, FB = 2V, TON = GND (1000kHz)
TON = REF (550kHz)
V+ = 24V, FB = 2V
TON = open (300kHz)
TON = VCC (200kHz)
TON = VCC, open, or REF (200kHz, 300kHz, or 550kHz)
TON = GND (1000kHz)
Measured at VCC, FB forced above the regulation point
Measured at VDD, FB forced above the regulation point
SKP/SDN = 0
SKP/SDN = 0
SKP/SDN = 0, VCC = VDD = 0 or 5V
VCC = 4.5V to 5.5V, no REF load
3
5
115
180
265
-0.2
0.2
-1
1
-8
+8
-12
+12
-12
+12
375
425
475
135
155
173
260
289
318
375
418
461
400
500
300
375
700 1200
<1
5
25
40
2
5
<1
5
<1
5
1.98
2
2.02
UNITS
V
%
%
mV
mV
kΩ
µA
µA
%
ns
ns
ns
µA
µA
µA
µA
µA
µA
V
2 _______________________________________________________________________________________
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