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参数资料
| 型号： | MAX8723ETE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC REG FOR LCD DISPLAY 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 转换器，LCD |
| 输入电压： | 6 V ~ 13.2 V |
| 输出数： | 1 |
| 输出电压： | 3.3V，2 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
Low-Cost, Internal-Switch, Step-Down
Regulator for LCD Displays
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1 with 1.5MHz components of Table 1, unless otherwise specified. V IN = V INL = 12V, V OUT = +3.3V,
PGND = GND = 0, T A = -40°C to +85°C . Typical values are at T A = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
GENERAL
IN, INL Input Voltage Range
INL Quiescent Current
INL Standby Supply Current
FB = 1.8V, EXT unconnected
V INL = 6V to 13.2V, SHDN = GND
FSEL = GND
6.0
1275
13.2
12
0.5
1725
V
mA
mA
Operating Frequency
FSEL = VCC
FSEL = REF
850
425
1150
590
kHz
VL REGULATOR
VL Output Voltage
VL Undervoltage Lockout Threshold
6V < V INL < 13.2V, V FB = 1.8V, EXT unconnected,
I VL = 25mA
VL rising, hysteresis = 2.5%
4.9
3.6
5.1
4.4
V
V
REFERENCE
REF Output Voltage
REF Load Regulation
No external load
0 < I LOAD < 50μA
1.98
2.02
10
V
mV
STEP-DOWN REGULATOR
OUT Voltage in Fixed Mode
FB Voltage in Adjustable Mode
Output Voltage Adjust Range
Step-Down Regulator Fault Trip
Level
LX-to-IN Switch On-Resistance
LX-to-GND Switch On-Resistance
Positive Current Limit
Maximum Duty Cycle
V IN = 6.0V to 13.2V, I OUT = 0.5A (Note 1)
Duty cycle = 20% to 35%, I OUT = 0.5A (Note 1)
Falling edge
3.24
1.97
2.0
1.536
9
2.30
65
3.35
2.03
3.6
1.664
300
30
3.10
80
V
V
V
V
m ?
?
A
%
EXTERNAL FET DRIVER
EXT On-Resistance
EXT Output Driver Current
Sourcing or sinking
Sourcing or sinking, EXT = VCC/2
0.5
5
?
A
LOGIC AND I/O CONTROL
SHDN , Input Voltage Low
SHDN , Input Voltage High
SWITCH FREQUENCY SELECTION
FSEL = VCC (1MHz)
2
VCC - 0.4
0.4
V
V
V
FSEL Input Levels
FSEL = REF (0.5MHz)
FSEL = GND (1.5MHz)
1.6
2.4
0.5
V
V
Note 1: When the inductor is in continuous conduction, the output voltage has a DC regulation level lower than the error comparator
threshold by 50% of the output voltage ripple.
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
4
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