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参数资料
| 型号： | MAX8739ETP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/19页 |
| 文件大小： | 0K |
| 描述： | IC DC/DC CONV W/OPAMP 20TQFN-EP |
| 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，TFT，LCD |
| 输入电压： | 1.8 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 13 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
TFT, LCD, DC-DC Converter with
Operational Amplifiers
ABSOLUTE MAXIMUM RATINGS
IN, CTL, FREQ, LDO to AGND .................................-0.3V to +6V
COMP, FB, DEL to AGND ........................-0.3V to (V LDO + 0.3V)
PGND to AGND ..................................................................±0.3V
LX to PGND ............................................................-0.3V to +14V
SUP to AGND .........................................................-0.3V to +14V
POS1, POS2, NEG1, NEG2, OUT1,
OUT2 to AGND .....................................-0.3V to (V SUP + 0.3V)
SRC to AGND .........................................................-0.3V to +30V
COM, DRN to AGND ................................-0.3V to (V SRC + 0.3V)
OUT1, OUT2 Maximum Continuous Output Current ........±75mA
LX Switch Maximum Continuous RMS Output Current .........1.6A
Continuous Power Dissipation (T A = +70°C)
20-Pin, 5mm × 5mm, Thin QFN (derate 20.8mW/°C
above +70°C).............................................................1667mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
COM RMS Output Current................................................±50mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V IN = 2.5V, V SUP = 10V, V SRC = 28V, FREQ = CTL = IN, PGND = AGND = 0, T A = 0°C to +85°C . Typical values are at T A = +25°C,
unless otherwise noted.)
PARAMETER
IN Supply Range
IN Quiescent Current
IN Undervoltage Lockout
Threshold
LDO Output Voltage
LDO Undervoltage Lockout
Threshold
CONDITIONS
V IN = 2.5V, V FB = 1.5V
IN rising, 200mV hysteresis
6V ≤ V SUP ≤ 13V, I LDO = 12.5mA
LDO rising, 200mV hysteresis
MIN
1.8
4.6
2.4
TYP
15
1.30
5
2.7
MAX
5.5
30
1.75
5.4
3.0
UNITS
V
μA
V
V
V
LDO Output Current
15
mA
SUP Supply Voltage Range
SUP Undervoltage Fault
Threshold
4.5
13.0
1.4
V
V
SUP Supply Current
Thermal Shutdown
V POS _ = 4V, no load
Rising edge, 15°C hysteresis
LX not switching
LX switching
1.8
16
+160
3.0
30
mA
° C
STEP-UP REGULATOR
Operating Frequency
Maximum Duty Cycle
FREQ = AGND
FREQ = IN
FREQ = AGND
FREQ = IN
512
1020
91
88
600
1200
95
92
768
1380
99
96
kHz
%
FREQ Input Low Voltage
FREQ Input High Voltage
V IN = 1.8V to 5.5V
V IN = 1.8V to 2.4V
V IN = 2.4V to 5.5V
1.4
2.0
0.6
V
V
FREQ Pulldown Current
FB Regulation Voltage
FB Fault Trip Level
Duration to Trigger Fault
Condition
V FREQ = 1.0V
I SWITCH = 200mA
Falling edge
FREQ = AGND
FREQ = IN
3.5
1.225
0.96
43
47
5.0
1.240
1.00
51
55
6.0
1.255
1.04
64
65
μA
V
V
ms
2
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