MAX767EAP(1994) 데이터 시트보기 (PDF) - Maxim Integrated
부품명
상세내역
제조사
MAX767EAP Datasheet PDF : 20 Pages
| |||
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, 10sec) .............................+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)
CONDITIONS
0mV < (CS - FB) < 80mV,
4.5V < VCC < 5.5V
(includes load and
line regulation)
MAX767, MAX767T
MAX767R
MAX767S
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
Load Regulation
(CS - FB) = 0mV to 80mV
2.5
%
Line Regulation
VCC Fault Lockout Voltage
Current-Limit Voltage
VCC = 4.5V to 5.5V
Falling edge, hysteresis = 1%
CS - FB
0.1
%
3.80
4.20
V
80
100
120
mV
SS Source Current
2.50
4
6.5
µA
SS Fault Sink Current
2
mA
Reference Voltage (REF)
MAX767, MAX767R, MAX767S
MAX767T
3.24 3.30 3.36
V
3.26 3.30 3.34
VCC Standby Current
VCC Quiescent Current
Oscillator Frequency
Oscillator SYNC Range
ON = 0V, VCC = 5.5V
FB = CS = 3.5V
SYNC = 3.3V
SYNC = 0V or 5V
120
200
µA
0.7
1.0
mA
260
300
340
kHz
200
240
350 kHz
SYNC High Pulse Width
200
ns
SYNC Low Pulse Width
200
ns
SYNC Rise/Fall Time
Oscillator Maximum Duty Cycle
Input Low Voltage
Input High Voltage
Input Current
Not tested
SYNC = 3.3V
SYNC = 0V
SYNC, ON
ON
SYNC
SYNC, ON = 0V or 5V
89
92
95
2.40
VCC - 0.5
200
ns
%
0.8
V
V
±1
µA
DL Sink/Source Current
DL = 2V
1
A
DH Sink/Source Current
(BST - LX) = 4.5V, DH = 2V
1
A
DL On Resistance
DH On Resistance
High or low
High or low, (BST - LX) = 4.5V
7
Ω
7
Ω
2 _______________________________________________________________________________________
Share Link: 