参数资料
型号: MAX8764ETP+
厂商: Maxim Integrated Products
文件页数: 5/23页
文件大小: 0K
描述: IC CNTRL STP DWN HS 20-TQFN
标准包装: 60
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-WQFN 裸露焊盘
供应商设备封装: 20-TQFN-EP(5x5)
包装: 管件
High-Speed, Step-Down Controller with
Accurate Current Limit for Notebook Computers
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, V CC = V DD = 5V, SKIP = LATCH = GND, T A = -40 ° C to +85 ° C , unless otherwise noted.) (Note 3)
PARAMETER
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+)
Reference Voltage
Overvoltage Trip Threshold
(Fixed-Threshold Mode)
Overvoltage Comparator Offset
(Adjustable-Threshold Mode)
Output Undervoltage Protection
Trip Threshold (Fixed Threshold
Mode)
Output Undervoltage Protection
Trip Threshold (Adjustable Mode)
PGOOD Trip Threshold (Lower)
PGOOD Trip Threshold (Upper)
PGOOD Output Low Voltage
PGOOD Leakage Current
Current-Limit Threshold (Fixed)
Current-Limit Threshold
(Adjustable)
V CC Undervoltage
Lockout Threshold
CONDITIONS
(Note 2)
FB forced above the regulation point
FB forced above the regulation point
Measured at V+
SHDN = GND
SHDN = GND
SHDN = GND, V+ = 28V, V CC = V DD = 0 or 5V
V CC = 4.5V to 5.5V, no external REF load
With respect to error comparator threshold, no load
OVP = GND, rising edge, hysteresis = 1%
External feedback, measured at FB with respect to
V OVP , 1V < V OVP 1.8V, rising edge, hysteresis = 1%
Internal feedback, measured at OUT with respect to the
nominal OUT regulation voltage, 1V < V OVP < 1.8V
With respect to error comparator threshold,
UVP = V CC
Measured at FB/OUT with respect to V UVP ; 0.4V < V UVP
< 1.0V
With respect to error comparator threshold, no load
OUT falling edge, hysteresis = 1%
With respect to error comparator threshold, no load
OUT rising edge, hysteresis = 1%
I SINK = 1mA
High state, forced to 5.5V
GND - V CS , ILIM = V CC
GND - V CS , V ILIM = 0.5V
GND - V CS , V ILIM = 2V
Rising edge, hysteresis = 20mV,
PWM disabled below this level
MIN
1.98
12
-30
-3.5
65
-5
-12.5
7.5
85
35
160
4.1
TYP
70
MAX
500
800
5
40
5
5
5
2.02
17
+30
+3.5
75
+5
-7.5
12.5
0.4
1
115
65
240
4.4
UNITS
ns
μA
μA
μA
μA
μA
μA
V
%
mV
%
%
%
%
%
V
μA
mV
mV
V
Logic Input High Voltage
Logic Input Low Voltage
LATCH , SHDN , SKIP
LATCH , SHDN , SKIP
2.4
0.8
V
V
Logic Input Current
LATCH , SHDN , SKIP
-1
+1
μA
Note 1: When the inductor is in continuous conduction, the output voltage has a DC regulation level higher than the error compara-
tor threshold by 50% of the ripple. In discontinuous conduction ( SKIP = GND, light load), the output voltage has a DC regu-
lation level higher than the trip level by approximately 1.5% due to slope compensation.
Note 2: On-time and off-time specifications are measured from 50% point to 50% point at the DH pin with LX = GND, V BST = 5V,
and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching speeds.
Note 3: Specifications to -40°C are guaranteed by design, not production tested.
Note 4: Production testing limitations due to package handling require relaxed maximum on-resistance specifications for the thin
QFN package. The MAX8764EEP and MAX8764ETP contain the same die and the thin QFN package imposes no additional
resistance in-circuit.
_______________________________________________________________________________________
5
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