参数资料
| 型号： | SP6655ER-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 2/17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 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
S P 6 6 5 5
H i g h E f f i c i e n c y 4 0 0 m A S y n c h r o n o u s B u c k R e g u l a t o r
ABSOLUTE MAXIMUM RATINGS
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
OPERATING RATINGS
Input Voltage Range V IN ............................. UVLO to 5.5V
Ambient Temperature Range ................... -40°C to +85°C
Thermal Resistance θ JA ....................................40.5°C/W
rating conditions for extended periods of time may affect
reliability.
PV IN ,V IN ................................................................... 6V
All other pins .................................... -0.3V to VIN+0.3V
PV IN , P GND , LX current ................................................ 2A
Storage Temperature .............................. -65°C to 150°C
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Ambient Temperature of T A = 27°C only; limits applying over the full
Operating Ambient Temperature range are denoted by a “?”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at T A = 27°C, and are provided
for reference purposes only. Unless otherwise indicated, V IN = UV IN = V SDN = 3.6V, V OUT = V FB , I OUT = 0mA , T A = – 40°C to
85°C.
Parameter
Min.
Typ.
Max.
Units
Conditions
Input Voltage Operating
Range
Minimum Output Voltage
UVLO
1.0
5.5
V
V
?
?
Result of I Q measurement at
V IN =PV IN =5.5V
FB Set Voltage, Vr
Overall Accuracy
0.784
0.800
0.816
±5
±4
V
%
?
25°C, I O =200mA Close Loop. L I = 10 μH,
C OUT = 22μF
Measured at V IN =5.5V, no load and
V IN =3.6V, 200mA load, Close Loop
T A = – 40°C to 85°C
Measured at V IN =5.5V, no load and
V IN =3.6V, 200mA load, Close Loop
T A = 0°C to 70°C
On-Time Constant – K ON
Min, T ON =K ON /(V IN -V OUT )
Off-Time Constant – K OFF
Min, T OFF =K OFF /V OUT
1.5
1.6
2.25
2.4
3.0
3.2
V* μ s
V* μ s
?
?
Close Loop, L I = 10μH,C OUT = 22μ F
Inductor current limit tripped, VFB=0.5V
Measured at V OUT =1V
Off-Time Blanking
100
ns
?
Turn On Time
PMOS Switch Resistance
NMOS Switch Resistance
200
0.3
0.3
400
0.6
0.6
μ s
?
?
?
?
?
400mA Load
I PMOS = 200mA
I NMOS = 200mA
Inductor Current Limit
Power Efficiency
Minimum Guaranteed Load
Current
V IN Quiescent Current
V IN Shutdown Current
V OUT Quiescent Current
V OUT Shutdown Current
UVLO
Undervoltage Lockout
Threshold, V IN falling
500
400
2.55
2.70
2.85
625
96
92
500
20
1
2
1
2.70
2.85
3.00
750
30
500
5
500
2.85
3.00
3.15
mA
%
mA
μ A
nA
μ A
nA
V
?
?
?
?
?
?
?
?
VFB=0.5V
V OUT =2.5V, I O =200mA
V OUT =3.3V, I O =400mA
V OUT =3.3V, V IN =3.6V and V IN = 5.5V
D1=D0=0V
V OUT = 3.3V
D1=D0=0V
D1=0V, D0=V IN
D1=V IN , D0=0V
D1=V IN , D0=V IN
UVLO hysteresis
40
mV
?
Battlo Trip Voltage, V IN falling
265
300
335
mV
?
Measured as V IN -V OUT
Battlo Trip Voltage Hysteresis
? 2012 Exar Corporation
9
2/17
mV
?
Rev. 1.0.0
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