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MAX8529 数据表(PDF) 2 Page - Maxim Integrated Products

部件名 MAX8529
功能描述  1.5MHz Dual 180째 Out-of-Phase PWM Step-Down Controller with POR
Download  20 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX8529 数据表(HTML) 2 Page - Maxim Integrated Products

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1.5MHz Dual 180° Out-of-Phase
PWM Step-Down Controller with POR
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V+ to GND ..............................................................-0.3V to +25V
PGND to GND .......................................................-0.3V to +0.3V
VL to GND ..................-0.3V to the lower of +6V and (V+ + 0.3V)
BST1, BST2 to GND ...............................................-0.3V to +30V
LX1 to BST1..............................................................-6V to +0.3V
LX2 to BST2..............................................................-6V to +0.3V
DH1 to LX1 ..............................................-0.3V to (VBST1 + 0.3V)
DH2 to LX2 ..............................................-0.3V to (VBST2 + 0.3V)
DL1, DL2 to PGND ........................................-0.3V to (VL + 0.3V)
CKO, REF, OSC, ILIM1, ILIM2,
COMP1, COMP2 to GND ..........................-0.3V to (VL + 0.3V)
FB1, FB2, RST, SYNC, EN to GND...........................-0.3V to +6V
VL to GND Short Circuit..............................................Continuous
REF to GND Short Circuit ...........................................Continuous
Continuous Power Dissipation (TA = +70°C)
24-Pin QSOP (derate 9.4mW/°C above +70°C)...........762mW
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
ELECTRICAL CHARACTERISTICS
(V+ = 12V, EN = ILIM_ = VL, SYNC = GND, IVL = 0mA, PGND = GND, CREF = 0.22µF, CVL = 4.7µF (ceramic), ROSC = 10k
Ω,
compensation components for COMP_ are from Figure 1, TA = -40°C to +85°C (Note 1), unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
(Note 2)
4.75
23.00
V+ Operating Range
VL = V+ (Note 2)
4.75
5.50
V
V+ Operating Supply Current
VL unloaded, no MOSFETs connected
4.0
4.8
7.0
mA
V+ Standby Supply Current
EN = LX_ = FB_ = 0V
ROSC = 10k
Ω
0.50
0.65
1.00
mA
Thermal Shutdown
Rising temperature, typical hysteresis = 10
°C
160
°C
ILIM_ = VL
75
100
125
RILIM_ = 100k
Ω
32
50
62
Current-Limit Threshold
PGND - LX_
RILIM_ = 600k
Ω
225
300
375
mV
VL REGULATOR
Output Voltage
5.5V < V+ < 23V, 1mA < ILOAD < 50mA
4.75
5
5.25
V
VL Undervoltage Lockout
Trip Level
4.4
4.55
4.7
V
REFERENCE
Output Voltage
IREF = 0µA
1.98
2.00
2.02
V
Reference Load Regulation
0µA < IREF < 50µA
0
4
10
mV
SOFT-START
Digital Ramp Period
Internal 6-bit DAC for one converter to ramp from 0V to
full scale (Note 3)
1024
DC-to-
DC
Clocks
Soft-Start Steps
64
Steps
FREQUENCY
Low End of Range
ROSC = 10k
Ω
540
600
600
kHz
High End of Range
ROSC = 5k
Ω
1020
1200
1380
kHz
DH_ Minimum Off-Time
ROSC = 5k
Ω
110
160
ns


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