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参数资料
| 型号： | MAX8795A+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1.6 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, QCC32 |
| 封装： | 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-2, TQFN-32 |
| 文件页数： | 20/24页 |
| 文件大小： | 387K |
| 代理商： | MAX8795A+ |
MAX8795A
TFT-LCD DC-DC Converter with
Operational Amplifiers
_
__
_
5
ELECTRICAL CHARACTERISTICS
(VIN = 3V, VMAIN = VSUP = 14V, PGND = AGND = BGND = 0, IREF = 25A, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
IN Supply Range
VIN
(Note 2)
2.5
6.0
V
IN Undervoltage-Lockout
Threshold
VUVLO
VIN rising, typical hysteresis = 150mV
2.05
2.45
V
VFB = VFBP = 1.3V, VFBN = 0,
LX not switching
1.0
IN Quiescent Current
IIN
VFB = 1.2V, VFBP = 1.4V, VFBN = 0,
LX switching
3
mA
REF Output Voltage
No external load
1.218
1.277
V
REF Undervoltage Lockout
Threshold
Rising edge; typical hysteresis = 160mV
1.15
V
MAIN STEP-UP REGULATOR
Output Voltage Range
VMAIN
VIN
18
V
Operating Frequency
fOSC
900
1400
kHz
FB Regulation Voltage
VFB
No load
1.198
1.260
V
FB Line Regulation
VIN = 2.5V to 6V
±0.4
%/ V
FB Transconductance
ICOMP = ±2.5A
75
280
S
LX On-Resistance
RLX(ON)
ILX = 200mA
260
m
LX Current Limit
ILIM
VFB = 1.2V, duty cycle = 75%
2.5
3.5
A
OPERATIONAL AMPLIFIERS
SUP Supply Range
VSUP
618
V
SUP Overvoltage Fault Threshold
18.0
19.9
V
SUP Supply Current
ISUP
Buffer configuration, VPOS_ = VSUP / 2,
no load
5mA
Input Offset Voltage
VOS
(VNEG_, VPOS_, VOUT_)
VSUP / 2
12
mV
Input Common-Mode Voltage
Range
VCM
0VSUP
V
Output Voltage Swing, High
VOH
IOUT_ = 5mA
VSUP -
100
mV
Output Voltage Swing Low
VOL
IOUT_ = -5mA
100
Source
75
Short-Circuit Current
To VSUP / 2
Sink
75
mA
GATE-ON LINEAR-REGULATOR CONTROLLER
FBP Regulation Voltage
VFBP
IDRVP = 100A
1.210
1.280
V
FBP Effective Load-Regulation
Error (Transconductance)
VDRVP = 10V, IDRVP = 50A to 1mA
-1.5
%
FBP Line (IN) Regulation Error
IDRVP = 100A, 2.5V < VIN < 6V
10
mV
DRVP Sink Current
IDRVP
VFBP = 1.1V, VDRVP = 10V
1
mA
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