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| 型号： | MAX8764EEP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/23页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL STP DWN HS 20-QSOP |
| 标准包装： | 2,500 |
| 应用： | 控制器，笔记本电脑电源系统 |
| 输入电压： | 2 V ~ 28 V |
| 输出数： | 1 |
| 输出电压： | 1.8V，2.5V，1 V ~ 5.5 V |
| 工作温度： | 0°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： | 带卷 (TR) |
High-Speed, Step-Down Controller with
Accurate Current Limit for Notebook Computers
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +28V
V CC , V DD to GND .....................................................-0.3V to +6V
OUT, PGOOD, SHDN to GND ..................................-0.3V to +6V
FB, ILIM, LATCH , OVP, REF, SKIP ,
TON, UVP to GND ..................................-0.3V to (V CC + 0.3V)
BST to GND ............................................................-0.3V to +34V
CS to GND.................................................................-6V to +30V
DL to GND ..................................................-0.3V to (V DD + 0.3V)
DH to LX .....................................................-0.3V to (BST + 0.3V)
REF Short Circuit to GND ...........................................Continuous
Continuous Power Dissipation (T A = +70°C)
20-Pin QSOP (derate 9.1mW/ ° C above +70 ° C)...........727mW
20-Pin 5mm x 5mm Thin QFN (derate 20.0mW/°C
above +70°C).................................................................1.60W
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
LX to BST..................................................................-6V to +0.3V
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+ = 15V, V CC = V DD = 5V, SKIP = LATCH = GND, T A = 0 ° C to +85 ° C , unless otherwise noted. Typical values
are at T A = +25 ° C.)
PARAMETER
Input Voltage Range
Battery voltage, V+
V CC , V DD
CONDITIONS
MIN
2
4.5
TYP
MAX
28
5.5
UNITS
V
Error Comparator Threshold
(DC Output Voltage Accuracy)
(Note 1)
V+ = 4.5V to 28V,
SKIP = V CC
FB = OUT
FB = GND
FB = V CC
0.99
2.475
1.782
2.5
1.8
1.01
2.525
1.818
V
Load Regulation Error
Line Regulation Error
FB Input Bias Current
Output Adjustment Range
I LOAD = 0 to 3A, SKIP = V CC
V CC = 4.5V to 5.5V, V+ = 4.5V to 28V
-0.1
1.0
9
5
+0.1
5.5
mV
mV
μA
V
OUT Input Resistance
Soft-Start Ramp Time
FB = GND
FB = V CC or adjustable feedback mode
Rising edge of SHDN to full current limit
TON = GND (600kHz)
90
70
140
190
145
1.7
160
350
270
180
k ?
ms
On-Time
V+ = 24V,
V OUT = 2V
(Note 2)
TON = REF (450kHz)
TON = unconnected (300kHz)
175
260
200
290
225
320
ns
TON = V CC (200kHz)
380
425
470
Minimum Off-Time
Quiescent Supply Current (V CC )
Quiescent Supply Current (V DD )
Quiescent Supply Current (V+)
Shutdown Supply Current (V CC )
Shutdown Supply Current (V DD )
Shutdown Supply Current (V+)
(Note 2)
FB forced above the regulation point
FB forced above the regulation point
SHDN = GND
SHDN = GND
SHDN = GND, V+ = 28V, V CC = V DD = 0 or 5V
400
550
<1
25
<1
<1
<1
500
800
5
40
5
5
5
ns
μA
μA
μA
μA
μA
μA
Reference Voltage
Reference Load Regulation
V CC = 4.5V to 5.5V, no external REF load
I REF = 0 to 50μA
1.98
2.00
2.02
0.01
V
V
2
_______________________________________________________________________________________
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