MAX17761ATC 데이터 시트보기 (PDF) - Maxim Integrated
부품명
상세내역
제조사
MAX17761ATC Datasheet PDF : 17 Pages
| |||
MAX17761
4.5V to 76V, 1A, High-Efficiency,
Synchronous Step-Down DC-DC Converter
Electrical Characteristics (continued)
(VIN = 24V, VEN/UVLO = unconnected, RRT = 105kΩ (fSW = 400kHz), LX = unconnected, TA = -40°C to +125°C, unless otherwise
noted. Typical values are at TA = +25°C. All voltages are referenced to SGND, unless otherwise noted.) (Note 2)
PARAMETER
LDO (VCC)
VCC Output Voltage Range
VCC Current Limit
VCC Dropout
VCC UVLO
EXT LDO
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VCC
6V < VIN < 76V, 0mA < IVCC < 5mA 4.75
5
5.25
V
IVCC-MAX
VCC = 4.3V, VIN = 12V
13
26
52
mA
VCC-DO
VIN = 4.5V, IVCC = 5mA
0.25
V
VCC-UVR
VCC rising
4.05
4.2
4.35
V
VCC-UVF
VCC falling
3.65
3.8
3.95
V
EXTVCC Switchover Threshold
EXTVCC Switchover Threshold
Hysteresis
EXTVCC Dropout
EXTVCC Current Limit
POWER MOSFETs
High-Side pMOS On-Resistance
Low-Side nMOS On-Resistance
LX Leakage Current
SOFT-START
Charging Current
FEEDBACK (FB)
EXTVCC rising
EXTVCC-DO
IVCC-MAX
EXTVCC = 4.75V, IVCC = 5mA
VCC = 4.3V, EXTVCC = 5V
RDS-ONH
RDS-ONL
ILX-LKG
ILX = 0.3A, sourcing
ILX = 0.3A, sinking
VIN = 76V, TA = +25°C,
VLX = (VPGND + 1V) to (VIN - 1V)
ISS
4.65 4.744 4.85
V
0.3
V
0.1
V
15
21
34
mA
0.9
1.8
Ω
0.275 0.55
Ω
-1
+1
µA
4.7
5
5.3
µA
FB Regulation Voltage
FB Regulation Voltage
FB Input Leakage Current
CURRENT LIMIT
VFB-REG
VFB-REG
IFB
RILIM = 243kΩ or 121kΩ
RILIM = open or 422kΩ
VFB = 1V, TA = +25°C
0.788 0.8 0.812
V
0.788 0.812 0.824
V
-100
+100
nA
Peak Current-Limit Threshold
Negative Current-Limit Threshold
PFM Current Level
ISOURCE-
LIMIT
ISINK-LIMIT
IPFM
RILIM = open or RILIM = 243KΩ
RILIM = 121kΩ or RILIM = 422kΩ
RILIM = open or RILIM = 422kΩ
RILIM = 243kΩ
RILIM = 121kΩ
RILIM = open
RILIM = 422kΩ
1.41
1.6
1.83
A
0.94 1.14
1.3
A
2.5
mA
0.57 0.65 0.725
A
0.35 0.455 0.56
A
0.235 0.33 0.44
A
0.125 0.23 0.32
A
www.maximintegrated.com
Maxim Integrated │ 3
Share Link: 