参数资料
型号: MAX8792ETD+T
厂商: Maxim Integrated Products
文件页数: 3/28页
文件大小: 0K
描述: IC PWM CTRLR STEP-DWN 14TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
应用: PWM 控制器
输入电压: 2 V ~ 26 V
电源电压: 4.5 V ~ 5.5 V
电流 - 电源: 700µA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-WFDFN 裸露焊盘
供应商设备封装: 14-TDFN-EP(3x3)
包装: 标准包装
其它名称: MAX8792ETD+TDKR
Single Quick-PWM Step-Down
Controller with Dynamic REFIN
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V IN = 12V, V DD = V CC = V EN = 5V, REFIN = ILIM = REF, SKIP = GND. T A = 0°C to +85°C , unless otherwise spec-
ified. Typical values are at T A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
FAULT DETECTION
With respect to the internal target voltage
(error comparator threshold); rising edge;
250
300
350
mV
Output Overvoltage-Protection
Trip Threshold
OVP
hysteresis = 50mV
Dynamic transition
V REF +
0.30
V
Minimum OVP threshold
0.7
Output Overvoltage
Fault-Propagation Delay
t OVP
FB forced 25mV above trip threshold
5
μs
Output Undervoltage-Protection
Trip Threshold
Output Undervoltage
Fault-Propagation Delay
UVP
t UVP
With respect to the internal target voltage
(error comparator threshold); falling edge;
hysteresis = 50mV
FB forced 25mV below trip threshold
-240
100
-200
200
-160
350
mV
μs
UVP falling edge, 25mV overdrive
5
PGOOD Propagation Delay
PGOOD Output-Low Voltage
t PGOOD
OVP rising edge, 25mV overdrive
Startup delay
I SINK = 3mA
100
5
200
350
0.4
μs
V
PGOOD Leakage Current
Dynamic REFIN Transition Fault
Blanking Threshold
Thermal-Shutdown Threshold
I PGOOD
T SHDN
FB = REFIN (PGOOD high impedance),
PGOOD forced to 5V, T A = +25°C
Fault blanking initiated; REFIN deviation
from the internal target voltage (error
comparator threshold); hysteresis = 10mV
Hysteresis = 15°C
±50
160
1
μA
mV
°C
V CC Undervoltage Lockout
Threshold
V UVLO(VCC)
Rising edge, PWM disabled below this
level; hysteresis = 100mV
3.95
4.2
4.45
V
CURRENT LIMIT
ILIM Input Range
0.4
V REF
V
Current-Limit Threshold
Current-Limit Threshold
(Negative)
Current-Limit Threshold
(Zero Crossing)
Ultrasonic Frequency
V ILIMIT
V INEG
V ZX
V ILIM = 0.4V
ILIM = REF (2.0V)
V ILIM = 0.4V
V ILIM = 0.4V,
V GND - V LX , SKIP = GND or open
SKIP = open (3.3V); V FB = V REFIN + 50mV
18
92
18
20
100
-24
1
30
22
108
mV
mV
mV
kHz
Ultrasonic Current-Limit Threshold
SKIP = open (3.3V); V FB = V REFIN + 50mV
35
mV
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3
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