參數(shù)資料
型號： SP7648
英文描述： Low Reference High Efficiency Boost Regulator
中文描述： 高效率低參考升壓穩(wěn)壓器
文件頁數(shù)： 2/12頁
文件大?。?/td> 236K
代理商： SP7648
2
Date: 7/20/05
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator Copyright 2005 Sipex Corporation
LX, Vo, V
, FLASHOUT, FB to GND pin ...................... -0.3 to 6.0V
SHDN, FLASH ..................................................... -0.3V to V
+1.0V
Vo, GND, LX Current ....................................................................... 2A
Reverse V
BATT
Current .............................................................. 220mA
Forward V
Current .............................................................. 500mA
Storage Temperature .................................................. -65
°
C to 150
°
C
PARAMETER
Input Voltage Operating Range, V
BATT
Output Voltage Range, V
OUT
Under Voltage Lock-out/UVLO
Output Voltage, V
O
Shutdown Current into V
O,
I
SDO
Shutdown Current into V
BATT,
I
SDB
Efficiency
MIN
2.7
2.7
0.5
4.6
-
-
TYP
-
-
0.61
5.0
1
250
92
800
1600
800
400
200
1.0
3.5
300
0.30
0.30
0.8
0.288
1
MAX
4.5
5.5
0.7
5.4
500
750
-
1000
UNITS
V
V
V
V
nA
nA
%
mA
mA
mA
mA
mA
V*
μ
s
V*
μ
s
μ
s
CONDITIONS
After Startup
Internal Feedback Divider
V
SHDN
= ZeroV
V
SHDN
= ZeroV, V
BATT
= 2.7V
V
BATT
= 2.7V, I
OUT
= 200mA, R
LIM
= 2k
R
LIM
= 2k
, I
PK
= 1600/R
LIM
R
LIM
= 1k
, I
PK
= 1600/R
LIM
V
BATT
= 2.7V, R
LIM
=1k
V
BATT
= 2.7V, R
LIM
=2k
V
BATT
= 2.7V, R
LIM
= 4k
K
OFF
≤
T
OFF
(V
OUT
- V
BATT
)
K
ON
≥
T
ON
(V
BATT
)
I
LOAD
= 1mA
I
NMOS
= 100mA
I
PMOS
= 100mA
External feedback Flash = 0
External feedback Flash = 1
V
FB
=1.3V
-
Inductor Peak Current Limit, I
PK
650
-
-
-
Output Current (Note 2)
-
-
-
-
-
-
Minimum Off-Time Constant K
OFF
Maximum On-Time Constant K
ON
Enable Valid to Output Stable (Note 3)
NMOS
Switch Resistance
PMOS
Switch Resistance
0.5
2.0
-
-
-
0.76
0.266
-
1.5
5.0
500
0.6
0.6
0.84
0.310
100
-
V
V
nA
FB Set Voltage, V
FB
FB Input Current
SHDN Input Voltage (Note 1)
V
IL
V
IH
-
-
-
1
-
-
-
0.5
-
100
3
0.4
-
V
V
BATT
= 2.7V
V
BATT
= 2.7V
2.0
-
-
-
1.0
SHDN Input Current
LX Pin Leakage
FLASH Threshold V
IL
V
IH
nA
μ
A
V
V
-
ELECTRICAL SPECIFICATIONS
V
BATT
=V
SHDN
= 3.6V, V
FB
=ZeroV, I
LOAD
= 0mA, T
AMB
= -40
°
C to +85
°
C, V
OUT
= 5.0V, typical values at 27
°
C unless
otherwise noted. The
denotes the specifications which apply over full operating temperature range -40oC to +85
°
C, unless
otherwise specified.
Operating Temperature ................................................ -40
C to +85
°
C
ESD Rating ........................................................................ 1.5kV HBM
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.
ABSOLUTE MAXIMUM RATINGS
Note 1:
SHDN must transition faster than 1V/100mS for proper operation.
Output Current I =
{
VIN
}
X E 2
{
Inductor Peak Current - Inductor Ripple Current
}
Note 2:
Note 3:
Guaranteed by Design.
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