參數(shù)資料
型號(hào)： LTC1261
廠商： Linear Technology Corporation
英文描述： Switched Capacitor Regulated Voltage Inverter(開關(guān)電容穩(wěn)壓電壓反相器)
中文描述： 開關(guān)電容穩(wěn)壓逆變器（開關(guān)電容穩(wěn)壓電壓反相器）
文件頁(yè)數(shù)： 3/16頁(yè)
文件大小： 265K
代理商： LTC1261
3
LTC1261
ELECTRICAL C
Doubler Mode. V
CC
= 5V
±
10%, C1 = 0.1
μ
F, C2 = 0 (Note 4), C
OUT
= 3.3
μ
F unless otherwise specified.
HARA TERISTICS
0
°
C
≤
T
A
≤
70
°
C
–40
°
C
≤
T
A
≤
85
°
C
(Note 7)
MIN
TYP
SYMBOL PARAMETER
V
OUT
Output Regulation
(Note 2)
CONDITIONS (Note 2)
–1.24V
≥
V
OUT
≥
–4V, 0
≤
I
OUT
≤
8mA
–1.24V
≥
V
OUT
≥
–4V, 0
≤
I
OUT
≤
7mA
–4V
≥
V
OUT
≥
–5V, 0
≤
I
OUT
≤
8mA (Note 6)
V
OUT
= 0V
I
OUT
= 5mA, V
OUT
= –4V
MIN
TYP
1
MAX
5
MAX
UNITS
G
G
%
%
%
1
2
5
2
I
SC
V
RIP
Output Short-Circuit Current
Output Ripple Voltage
G
60
5
125
60
5
125
mA
mV
LTC1261CS Only. Tripler Mode. V
CC
= 2.7V, C1 = C2 = 0.1
μ
F (Note 4), C
OUT
= 3.3
μ
F unless otherwise specified.
0
°
C
≤
T
A
≤
70
°
C
–40
°
C
≤
T
A
≤
85
°
C
(Note 7)
MIN
TYP
1
60
5
SYMBOL PARAMETER
V
OUT
Output Regulation
I
SC
Output Short-Circuit Current
V
RIP
Output Ripple Voltage
CONDITIONS (Note 2)
–1.24V
≥
V
OUT
≥
–4V, 0
≤
I
OUT
≤
5mA
V
OUT
= 0V
I
OUT
= 5mA, V
OUT
= –4V
MIN
TYP
1
60
5
MAX
5
125
MAX
5
125
UNITS
G
%
G
mA
mV
0
°
C
≤
T
A
≤
70
°
C
–40
°
C
≤
T
A
≤
85
°
C
(Note 7)
MIN
TYP
1
2
35
5
SYMBOL PARAMETER
V
OUT
Output Regulation
(Note 2)
I
SC
Output Short-Circuit Current
V
RIP
Output Ripple Voltage
CONDITIONS (Note 2)
–1.24V
≥
V
OUT
≥
–4.5V, 0
≤
I
OUT
≤
6mA
–4.5V
≥
V
OUT
≥
–5V, 0
≤
I
OUT
≤
3.5mA
V
OUT
= 0V
I
OUT
= 5mA, V
OUT
= –4V
MIN
TYP
1
2
35
5
MAX
5
5
75
MAX
5
UNITS
G
G
%
%
G
75
mA
mV
0
°
C
≤
T
A
≤
70
°
C
–40
°
C
≤
T
A
≤
85
°
C
(Note 7)
MIN
TYP
1
2
35
5
SYMBOL PARAMETER
V
OUT
Output Regulation
CONDITIONS (Note 2)
–1.24V
≥
V
OUT
≥
–4V, 0
≤
I
OUT
≤
12mA
–4V
≥
V
OUT
≥
–5V, 0
≤
I
OUT
≤
10mA
V
OUT
= 0V
I
OUT
= 5mA, V
OUT
= –4V
MIN
TYP
1
2
35
5
MAX
5
5
75
MAX
5
5
75
UNITS
G
G
%
%
I
SC
V
RIP
Output Short-Circuit Current
Output Ripple Voltage
G
mA
mV
LTC1261CS Only. Tripler Mode. V
CC
= 5V
±
10%, C1 = C2 = 0.1
μ
F (Note 4), C
OUT
= 3.3
μ
F unless otherwise specified.
LTC1261CS Only. Tripler Mode. V
CC
= 3.3V
±
10%, C1 = C2 = 0.1
μ
F (Note 4), C
OUT
= 3.3
μ
F unless otherwise specified.
to C2
–
with C1
–
and C2
+
floating. For the LTC1261CS8 in doubler mode,
C1 connects from C1
+
to C1
–
; there are no C2 pins.
Note 5:
Setting output to <–7V will exceed the absolute voltage maximum
rating with a 5V supply. With supplies higher than 5V, the output should
never be set to exceed V
CC
– 12V.
Note 6:
For output voltages below –4.5V the LTC1261 may reach 50%
duty cycle and fall out of regulation with heavy load or low input voltages.
Beyond this point, the output will follow the input with no regulation.
Note 7:
C grade device specifications are guaranteed over the 0
°
C to 70
°
C
temperature range. In addition, C grade device specifications are assured
over the –40
°
C to 85
°
C temperature range by design or correlation, but
are not production tested.
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
The Absolute Maximum Ratings are those values beyond which
the life of a device may be impaired.
Note 2:
All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3:
All typicals are given at T
A
= 25
°
C.
Note 4:
C1 = C2 = 0.1
μ
F means the specifications apply to tripler mode
where V
CC
– V
OUT
= 3V
CC
(LTC1261CS only; the LTC1261CS8 cannot be
connected in tripler mode) with C1 connected between C1
+
and C1
–
and
C2 connected between C2
+
and C2
–
. C2 = 0 implies doubler mode where
V
CC
– V
OUT
= 2V
CC
; for the LTC1261CS this means C1 connects from C1
+
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