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| 型号： | MAX8792ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/28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 |
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Single Quick-PWM Step-Down
Controller with Dynamic REFIN
ABSOLUTE MAXIMUM RATINGS
TON to GND ...........................................................-0.3V to +28V
V DD to GND ..............................................................-0.3V to +6V
V CC to GND ................................................-0.3V to (V DD + 0.3V)
EN, SKIP , PGOOD to GND.......................................-0.3V to +6V
REF, REFIN to GND ....................................-0.3V to (V CC + 0.3V)
ILIM, FB to GND .........................................-0.3V to (V CC + 0.3V)
DL to GND ..................................................-0.3V to (V DD + 0.3V)
BST to GND .................................................(V DD - 0.3V) to +34V
BST to LX..................................................................-0.3V to +6V
BST to V DD .............................................................-0.3V to +28V
DH to LX ....................................................-0.3V to (V BST + 0.3V)
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T A = +70°C)
14-Pin 3mm x 3mm TDFN
(derated 24.4mW/°C above +70°C)....................1951mW
Operating Temperature Range (extended) .........-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+240°C
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
(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
PWM CONTROLLER
Input Voltage Range
V IN
2
26
V
Quiescent Supply Current (V DD )
Shutdown Supply Current (V DD )
V DD -to-V CC Resistance
I DD + I CC
I SHDN
R CC
FB forced above REFIN
EN = GND, T A = +25°C
R TON = 97.5k Ω (600kHz)
V IN = 12V,
118
0.7
0.1
20
139
1.2
2
160
mA
μA
Ω
On-Time
t ON
V FB = 1.0V
R TON = 200k Ω (300kHz)
250
278
306
ns
(Note 3)
R TON = 302.5k Ω (200kHz)
354
417
480
Minimum Off-Time
TON Shutdown Supply Current
REFIN Voltage Range
FB Voltage Range
t OFF(MIN)
V REFIN
V FB
(Note 3)
EN = GND, V TON = 26V,
V CC = 0V or 5V, T A = +25°C
(Note 2)
(Note 2)
T A = +25°C
V REFIN = 0.5V,
0
0
0.495
200
0.01
0.5
300
1
V REF
V REF
0.505
ns
μA
V
V
measured at FB,
FB Voltage Accuracy
FB Input Bias Current
Load-Regulation Error
Line-Regulation Error
Soft-Start/-Stop Slew Rate
Dynamic REFIN Slew Rate
V FB
I FB
t SS
t DYN
V IN = 2V to 26V, T A = 0°C to +85°C
SKIP = V DD
T A = +25°C
V REFIN = 1.0V
T A = 0°C to +85°C
V REFIN = 2.0V
T A = 0°C to +85°C
V FB = 0.5V to 2.0V, T A = +25°C
I LOAD = 0 to 3A, SKIP = V DD
V CC = 4.5V to 5.5V, V IN = 4.5V to 26V
Rising/falling edge on EN
Rising edge on REFIN
0.493
0.995
0.993
1.990
-0.1
1.0
2.0
0.1
0.25
1
8
0.507
1.005
1.007
2.010
+0.1
V
μA
%
%
mV/μs
mV/μs
REFERENCE
Reference Voltage
V REF
V CC = 4.5V
to 5.5V
No load
I REF = -10μA to +50μA
1.990
1.98
2.00
2.010
2.02
V
2
_______________________________________________________________________________________
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