MAX8795AGCJ(2007) 查看數據表（PDF） - Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
MAX8795AGCJ Datasheet PDF : 30 Pages
| |||
TFT-LCD DC-DC Converter with
Operational Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VIN = 3V, VMAIN = VSUP = 14V, PGND = AGND = BGND = 0, IREF = 25µA, TA = -40°C to +105°C, unless otherwise noted.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX UNITS
GATE-OFF LINEAR-REGULATOR CONTROLLER
FBN Regulation Voltage
FBN Effective Load-Regulation
Error (Transconductance)
VFBN
IDRVN = 100µA, VREF - VFBN
VDRVN = -10V, IDRVN = 50µA to 1mA
0.972
1.022
V
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
DEL Turn-On Threshold
CTL Input Low Voltage
CTL Input High Voltage
SRC Input Voltage Range
SRC Input Current
SRC-to-COM Switch On-Resistance
DRN-to-COM Switch On-Resistance
VTH(DEL)
ISRC
RSRC(ON)
RDRN(ON)
During startup, VDEL = 1V
VIN = 2.5V to 5.5V
VIN = 2.5V to 5.5V
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
VDEL = 1.5V, CTL = IN
VDEL = 1.5V, CTL = AGND
4
6
µA
1.19
1.31
V
0.6
V
2
V
36
V
300
µA
200
12
Ω
70
Ω
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 and +105°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.)
STEP-UP EFFICIENCY
vs. LOAD CURRENT
90
SWITCHING FREQUENCY
vs. INPUT VOLTAGE
1.4
85
1.3
80
1.2
75
70
1
VIN = 5V
VMAIN = 13.9V
10
100
1000
LOAD CURRENT (mA)
1.1
1.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
STEP-UP SUPPLY CURRENT
vs. SUPPLY VOLTAGE
18
NO LOAD, SUP DISCONNECTED,
15
R1 = 221kΩ, R2 = 21.5kΩ
12
CURRENT INTO INDUCTOR
9
6
CURRENT INTO IN PIN
3
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
10 ______________________________________________________________________________________
Share Link: 