MAX767RCAP 데이터 시트보기 (PDF) - Maxim Integrated
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MAX767RCAP Datasheet PDF : 19 Pages
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5V-to-3.3V, Synchronous, Step-Down
Power-Supply Controller
ABSOLUTE MAXIMUM RATINGS
VCC to GND .................................................................-0.3V, +7V
PGND to GND ........................................................................±2V
BST to GND ...............................................................-0.3V, +15V
LX to BST.....................................................................-7V, +0.3V
Inputs/Outputs to GND
(ON, REF, SYNC, CS, FB, SS) .....................-0.3V, VCC + 0.3V
DL to PGND .....................................................-0.3V, VCC + 0.3V
DH to LX...........................................................-0.3V, BST + 0.3V
REF Short to GND.......................................................Momentary
REF Current.........................................................................20mA
Continuous Power Dissipation (TA = +70°C)
20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW
Operating Temperature Ranges:
MAX767CAP/MAX767_CAP.................................0°C to +70°C
MAX767EAP/MAX767_EAP ..............................-40°C to +85°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
(VCC = ON = 5V, GND = PGND = SYNC = 0V, IREF = 0mA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
VCC Input Supply Range
Output Voltage (FB)
Load Regulation
Line Regulation
VCC Fault Lockout Voltage
Current-Limit Voltage
SS Source Current
SS Fault Sink Current
CONDITIONS
0mV < (CS - FB) < 80mV,
4.5V < VCC < 5.5V
(includes load and
line regulation)
MAX767, MAX767T
MAX767R
MAX767S
(CS - FB) = 0mV to 80mV
VCC = 4.5V to 5.5V
Falling edge, hysteresis = 1%
CS - FB
MIN TYP MAX UNITS
4.5
5.5
V
3.17 3.35 3.46
3.32 3.50 3.60
V
3.46 3.65 3.75
2.5
%
0.1
%
3.80
4.20
V
80
100
120
mV
2.50
4
6.5
µA
2
mA
Reference Voltage (REF)
VCC Standby Current
VCC Quiescent Current
Oscillator Frequency
Oscillator SYNC Range
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator Maximum Duty Cycle
Input Low Voltage
Input High Voltage
Input Current
DL Sink/Source Current
DH Sink/Source Current
DL On Resistance
DH On Resistance
MAX767, MAX767R, MAX767S
MAX767T
ON = 0V, VCC = 5.5V
FB = CS = 3.5V
SYNC = 3.3V
SYNC = 0V or 5V
Not tested
SYNC = 3.3V
SYNC = 0V
SYNC, ON
ON
SYNC
SYNC, ON = 0V or 5V
DL = 2V
(BST - LX) = 4.5V, DH = 2V
High or low
High or low, (BST - LX) = 4.5V
3.24 3.30 3.36
V
3.26 3.30 3.34
120
200
µA
0.7
1.0
mA
260
300
340
kHz
200
240
350 kHz
200
ns
200
ns
200
ns
89
92
%
95
0.8
V
2.40
V
VCC - 0.5
±1
µA
1
A
1
A
7
Ω
7
Ω
2 _______________________________________________________________________________________
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