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參數(shù)資料
| 型號： | MAX8795A+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.6 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, QCC32 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WHHD-2, TQFN-32 |
| 文件頁數(shù)： | 21/24頁 |
| 文件大小： | 387K |
| 代理商： | MAX8795A+ |
STEP-UP EFFICIENCY
vs. LOAD CURRENT
MAX9795A
toc01
LOAD CURRENT (mA)
EFFICIENCY
(%)
100
10
75
80
85
90
70
1
1000
VIN = 5V
VMAIN = 13.9V
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
MAX9795A
toc02
INPUT VOLTAGE (V)
SWITCHING
FREQUENCY
(MHz)
5.0
4.5
4.0
3.5
3.0
1.1
1.2
1.3
1.4
1.0
2.5
5.5
STEP-UP SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX8795A
toc03
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
5.5
5.0
4.5
4.0
3.5
3.0
3
9
6
12
15
18
0
2.5
6.0
NO LOAD, SUP DISCONNECTED,
R1 = 221k
, R2 = 21.5k
CURRENT INTO INDUCTOR
CURRENT INTO IN PIN
MAX8795A
TFT-LCD DC-DC Converter with
Operational Amplifiers
6
_
__
_
ELECTRICAL CHARACTERISTICS (continued)
(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
GATE-OFF LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
VFBN
IDRVN = 100A, VREF - VFBN
0.972
1.022
V
FBN Effective Load-Regulation
Error (Transconductance)
VDRVN = -10V, IDRVN = 50A to 1mA
25
mV
FBN Line (IN) Regulation Error
IDRVN = 0.1mA, 2.5V < VIN < 6V
±
5
mV
DRVN Source Current
IDRVN
VFBN = 300mV, VDRVN = -10V
1
mA
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current
During startup, VDEL = 1V
4
6
A
DEL Turn-On Threshold
VTH(DEL)
1.19
1.31
V
CTL Input Low Voltage
VIN = 2.5V to 5.5V
0.6
V
CTL Input High Voltage
VIN = 2.5V to 5.5V
2
V
SRC Input Voltage Range
36
V
VDEL = 1.5V, CTL = IN
300
SRC Input Current
ISRC
VDEL = 1.5V, CTL = AGND
200
A
SRC-to-COM Switch On-Resistance
RSRC(ON)
VDEL = 1.5V, CTL = IN
10
DRN-to-COM Switch On-Resistance
RDRN(ON)
VDEL = 1.5V, CTL = AGND
60
Note 2: For 5.5V < VIN < 6.0V, use MAX8795A for no longer than 1% of IC lifetime. For continuous operation, input voltage should
not exceed 5.5V.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
Typical Operating Characteristics
(Circuit of Figure 1, VIN = 5V, VMAIN = 14V, VGON = 25V, VGOFF = -10V, TA = +25°C, unless otherwise noted.)
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