MAX8739 Просмотр технического описания (PDF) - Maxim Integrated
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MAX8739 Datasheet PDF : 19 Pages
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MAX8739
TFT, LCD, DC-DC Converter with
Operational Amplifiers
Electrical Characteristics (continued)
(VIN = 2.5V, VSUP = 10V, VSRC = 28V, FREQ = CTL = IN, PGND = AGND = 0, TA = 0°C to +85°C. Typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
FB Load Regulation
FB Line Regulation
FB Input Bias Current
FB Transconductance
FB Voltage Gain
LX On-Resistance
LX Leakage Current
LX Current Limit
Current-Sense Transresistance
Soft-Start Period
Soft-Start Step Size
OPERATIONAL AMPLIFIERS
Input Offset Voltage
Input Bias Current
Input Common-Mode Voltage
Range
Common-Mode Rejection Ratio
Open-Loop Gain
CONDITIONS
0 < ILOAD < 200mA, transient only
VIN = 1.8V to 5.5V
VFB = 1.3V
DICOMP = 5µA
FB to COMP
ILX = 200mA
VLX = VSUP = 13V
VFB = 1.1V, duty cycle = 65%
FREQ = AGND
FREQ = IN
VCM = VSUP/2, TA = +25°C
NEG1, POS1, NEG2, POS2
NEG1, POS1, NEG2, POS2
0 ≤ VNEG_, VPOS_ ≤ VSUP
Output Voltage Swing High
IOUT_ = 100µA
IOUT_ = 5mA
Output Voltage Swing Low
Short-Circuit Current
IOUT_ = -100µA
IOUT_ = -5mA
To VSUP/2
Source
Sink
Output Source-and-Sink Current
Power-Supply Rejection Ratio
Slew Rate
Buffer configuration, VPOS_ = 4V, |DVOS| < 10mV
DC, 6V ≤ VSUP ≤ 13V, VPOS_, VNEG_ = VSUP/2
-3dB Bandwidth
Gain-Bandwidth Product
RL = 10kΩ, CL = 10pF, buffer configuration
Buffer configuration
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
DEL Capacitor Charge Current
DEL Turn-On Threshold
During startup, VDEL = 1V
DEL Pin Discharge Switch On-
Resistance
During UVLO, VIN = 1.3V
CTL Input-Low Voltage
VIN = 1.8V to 5.5V
MIN
-0.15
75
1.5
0.22
TYP
-1
-0.08
125
160
700
200
0.01
1.9
0.36
13
14
0.24
MAX
+0.15
200
280
400
20
2.3
0.50
UNITS
%
%/V
nA
µS
V/V
mΩ
µA
A
V/A
ms
A
0
12
-50
+1
+50
0
VSUP
50
90
125
VSUP - VSUP
15
-2
VSUP - VSUP -
150
80
2
15
80
150
50
150
50
140
40
60
100
7.5
12
8
mV
nA
V
dB
dB
mV
mV
mA
mA
dB
V/µs
MHz
MHz
4
5
6
µA
1.178 1.24 1.302
V
20
Ω
0.6
V
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