参数资料
| 型号： | SP6656ER3-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1 V ~ 5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 电流 - 输出： | 400mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（2.5x2.4） |
ABSOLUTE MAXIMUM RATINGS
PV IN ,V IN .............................................................................................. 6V
All other pins .............................................................. -0.3V to V IN +0.3V
PV IN , P GND , LX current ........................................................................ 2A
Storage Temperature .................................................. -65 ° C to 150 ° C
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
Operating Temperature ................................................. -40 ° C to +85 ° C
ELECTRICAL CHARACTERISTICS
V IN = UV IN = V EN = 3.6V, V OUT = V FB , I O = 0mA, T AMB = -40 ° C to +85 ° C, typical values at 25 ° C unless otherwise noted.
PARAMETER
Input Voltage Operating
MIN
UVLO
TYP
MAX
5.5
UNITS
V
CONDITIONS
Range
Minimum Output Voltage
1.0
V
FB Set Voltage, Vr
0.784
0.800
0.816
V
25 ° C, I O = 200mA Close Loop. L I = 10 μ H,
C OUT = 22 μ F
Overall Accuracy
Measured at V IN = 5.5V, no load and
(-40 ° C to 85 ° C)
(0 ° C to 70 ° C)
± 5
± 4
%
V IN =3.6V, 200mA load, Close Loop
On-Time Constant - K ON
1.5
2.25
3.0
V* μ s
Close Loop, L I = 10 μ H,C OUT = 22 μ F
Min, T ON =K ON /(V IN -V OUT )
Off-Time Constant - K OFF
1.6
2.4
3.2
V* μ s
Inductor current limit tripped, VFB = 0.5V
Min, T OFF =K OFF /V OUT
Measured at V OUT = 1V
Off-Time Blanking
100
ns
Turn On Time
PMOS Switch Resistance
NMOS Switch Resistance
250
0.3
0.3
400
0.6
0.6
μ s
?
?
400mA Load
I PMOS = 200mA
I NMOS = 200mA
Inductor Current Limit
Power Efficiency
500
625
96
750
mA
%
VFB = 0.5V
V OUT = 2.5V, I O = 200mA
92
V OUT = 3.3V, I O = 400mA
Minimum Guaranteed Load
400
500
mA
Current
V IN Quiescent Current
V IN Shutdown Current
V OUT Quiescent Current
V OUT Shutdown Current
20
1
2
1
30
500
5
500
μ A
nA
μ A
nA
V OUT = 3.3V, V IN = 3.6V and V IN = 5.5V
EN = 0.0V
V OUT = 3.3V
EN = 0.0V
UVLO
Undervoltage Lockout
2.55
2.70
2.85
V
EN = V IN ,
Threshold, V IN falling
UVLO hysteresis
40
mV
OVSO Output Voltage
OVSO Leakage Current
Over-Temperature
50
5
140
100
100
mV
nA
° C
V IN = EN; Iovso =1mA; OVSI = 1 = Vcc
V IN = EN; Vovso= 3.6V;OVSI= 0.0V= GND
Rising Trip Point
Over-Temperature Hysteresis
14
° C
EN Leakage Current
1
500
nA
EN Input Threshold Voltage
0.60
0.90
1.25
1.8
V
V
High to Low Transition
Low to High Transition
FB Leakage Current
LX Leakage
1
3
100
5
nA
μ A
FB =1V
EN = 0.0V, V IN = 3.6V
LX = 0.0V, LX = V IN + 0.2V
OVSI Leakage Current
1
500
nA
OVSI Input Threshold Voltage
0.60
0.90
1.25
1.8
V
High to Low Transition
Low to High Transition
Date: 3/6/06
SP6656, 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output
2
? Copyright 2006 Sipex Corporation
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