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| 型号： | MAX8664BEEP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR DUAL OUT 20-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 电源 |
| 电流 - 电源： | 1.4mA |
| 电源电压： | 4.5 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 20-QSOP |
| 包装： | 管件 |
Low-Cost, Dual-Output, Step-Down
Controller with Fast Transient Response
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 12V, R OSC/EN12 to GND = 56.1k Ω , REFIN2 = V CC , T A = -40°C to +85°C, unless otherwise noted. Typical values are at
T A = +25°C.) (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PROTECTION FEATURES
Overvoltage Protection (OVP)
Threshold
V FB1 rising
V FB2 rising, V REFIN2 ≤ 1.3V
0.75
REFIN2
+ 0.15
V
Power-Good (PWRGD) Threshold
V REFIN2 = V VCC , V FB_ rising, MAX8664B
V FB1 rising, MAX8664A
0.500
0.525
0.550
V
Hysteresis
5
%
T A = +85 C
High-Side Current-Sense Program
Current (Note 3)
ILIM Leakage
o
T A = +25 o C
T A = +25°C
T A = +85°C
44
60
50
0.1
0.1
60
1.0
μA
μA
High-Side Current-Sense
Overcurrent Trip Adjustment Range
Internal Soft-Start Time
R OSC/EN12 = 56.1k Ω , 400kHz
0.05
2.5
0.40
V
ms
REFIN2 Internal Pulldown Resistance
Thermal-Shutdown Threshold
Engaged momentarily at startup
Junction temperature
10
+160
20
Ω
°C
DRIVER SPECIFICATIONS
Sourcing current,
V VL = 6.5V
1.35
2.1
DH_ Driver Resistance
I DH = -50mA
Sinking current,
V IN = V VL = V VCC = 5V
V VL = 6.5V
1.55
0.9
1.4
Ω
I DH = 50mA
V IN = V VL = V VCC = 5V
1.0
Sourcing current,
V VL = 6.5V
1.3
2
DL_ Driver Resistance
I DL = -50mA
Sinking current,
V IN = V VL = V VCC = 5V
V VL = 6.5V
1.5
0.6
1.1
Ω
I DL = 50mA
V IN = V VL = V VCC = 5V
0.7
Dead Time for Low-Side to
High-Side Transition
DL_ falling to DH_ rising
V VL = 6.5V
V VL = 5V
13
25
28
43
ns
DH_ Minimum On-Time
BST Current
Internal Boost Switch Resistance
V BST - V LX = 7V, V LX = 28V, V FB_ = 0.55V
OSC/EN12 not connected
70
108
1.25
0.001
6
149
2.3
ns
mA
μA
Ω
PWM CLOCK OSCILLATOR
PWM Clock-Frequency Accuracy
-15
+15
%
PWM Clock-Frequency Adjustment
Range
OSC/EN12 Disable Current
R OSC/EN12 = 226k Ω to 22.6k Ω
100
1.5
1000
2.5
kHz
μA
Note 2: Specifications at -40°C are guaranteed by design and not production tested.
Note 3: This current linearly compensates for the MOSFET temperature coefficient.
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