MAX8529EEG データシートの表示（PDF） - Maxim Integrated
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MAX8529EEG Datasheet PDF : 20 Pages
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1.5MHz Dual 180° Out-of-Phase
PWM Step-Down Controller with POR
ABSOLUTE MAXIMUM RATINGS
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
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+ = 12V, EN = ILIM_ = VL, SYNC = GND, IVL = 0mA, PGND = GND, CREF = 0.22µF, CVL = 4.7µF (ceramic), ROSC = 10kΩ,
compensation components for COMP_ are from Figure 1, TA = -40°C to +85°C (Note 1), unless otherwise noted.)
PARAMETER
GENERAL
V+ Operating Range
V+ Operating Supply Current
V+ Standby Supply Current
Thermal Shutdown
Current-Limit Threshold
VL REGULATOR
Output Voltage
VL Undervoltage Lockout
Trip Level
REFERENCE
Output Voltage
Reference Load Regulation
SOFT-START
Digital Ramp Period
Soft-Start Steps
FREQUENCY
Low End of Range
High End of Range
DH_ Minimum Off-Time
CONDITIONS
(Note 2)
VL = V+ (Note 2)
VL unloaded, no MOSFETs connected
EN = LX_ = FB_ = 0V
ROSC = 10kΩ
Rising temperature, typical hysteresis = 10°C
ILIM_ = VL
PGND - LX_
RILIM_ = 100kΩ
RILIM_ = 600kΩ
5.5V < V+ < 23V, 1mA < ILOAD < 50mA
MIN TYP MAX UNITS
4.75
23.00
V
4.75
5.50
4.0
4.8
7.0
mA
0.50 0.65 1.00
mA
160
°C
75
100
125
32
50
62
mV
225
300
375
4.75
5
5.25
V
4.4 4.55 4.7
V
IREF = 0µA
0µA < IREF < 50µA
1.98 2.00 2.02
V
0
4
10
mV
Internal 6-bit DAC for one converter to ramp from 0V to
full scale (Note 3)
1024
64
DC-to-
DC
Clocks
Steps
ROSC = 10kΩ
ROSC = 5kΩ
ROSC = 5kΩ
540
600
600
kHz
1020 1200 1380 kHz
110
160
ns
2 _______________________________________________________________________________________
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