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参数资料
| 型号： | LTC1266ACS#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 16-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 400kHz |
| 占空比： | 100% |
| 电源电压： | 3.5 V ~ 18 V |
| 降压： | 是 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
LTC1266
LTC1266-3.3/LTC1266-5
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V IN = 10V, V SHDN = V BINH = 0V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V SENSE 1
Current Sense Threshold
(Burst Mode Operation Enabled)
V BINH = 0V
LTC1266
V SENSE – = 3.3V, V FB = V OUT /2.64 + 25mV (Forced)
25
mV
LTC1266-3.3
LTC1266-5
V SENSE – = 3.3V, V FB = V OUT /2.64 – 25mV (Forced)
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
q
q
q
135
135
135
155
25
155
25
155
175
175
175
mV
mV
mV
mV
mV
V SENSE 2
Current Sense Threshold
(Burst Mode Operation Disabled)
V BINH = 2.1V
LTC1266
V SENSE – = 3.3V, V FB = V OUT /2.64 + 25mV (Forced)
– 20
mV
LTC1266-3.3
LTC1266-5
V SENSE – = 3.3V, V FB = V OUT /2.64 – 25mV (Forced)
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
V SENSE – = V OUT + 100mV (Forced)
V SENSE – = V OUT – 100mV (Forced)
q
q
q
135
135
135
155
– 20
155
– 20
155
175
175
175
mV
mV
mV
mV
mV
V SHDN
I SHDN
I PINV
Shutdown Pin Threshold
Shutdown Pin Input Current
Phase Invert Pin Input Current
0V < V SHDN < 8V, V IN = 16V
0V < V PINV < 18V, V IN = 18V
0.6
0.8
1.2
0.2
2
5
1
V
μ A
μ A
V BINH
Burst Mode Operation
V IN = 7V
0.8
1.2
2
V
Inhibit Pin Threshold
I BINH
Burst Mode Operation
0V < V BINH < 18V, V IN = 18V
0.2
1
μ A
Inhibit Pin Input Current
I CT
t OFF
t MAX
t r , t f
C T Pin Discharge Current
Off-Time (Note 4)
Max On-Time
Driver Output Transition Times (Note 7)
V SENSE + = V OUT – 100mV, V SENSE – = V OUT – 300mV
V OUT = 0V
C T = 390pF, I LOAD = 700mA
V OUT = 0V, V IN = 18V
C L = 3000pF (Pins 1, 16), V IN = 6V
50
4
70
2
5
60
100
90
10
6
200
μ A
μ A
μ s
μ s
ns
V CLAMP
Output Voltage Clamp in
Burst Mode Operation Inhibit
V BINH = 2.1V
LTC1266
LTC1266-3.3
LTC1266-5
Measured at V FB
Measured at V SENSE –
Measured at V SENSE –
1.30
3.43
5.20
V
V
V
V LBTRIP
I LBLEAK
I LBSINK
I LBIN
Low-Battery Trip Point
Max Leakage Current Into Pin 14
Max Sink Current Into Pin 14
Max Leakage Current Into Pin 13
V IN = 5V
V IN = 12V
V LBOUT = 18V, V LBIN = 2V
V LBOUT = 1V, V LBIN = 0V, 2.5V < V IN < 18V
V LBIN = 18V
1.14
1.17
1
1.25
1.30
25
8
0.2
1.35
1.42
200
1
V
V
nA
mA
μ A
– 40 ° C < T A < 85 ° C (Note 5), V IN = 10V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V FB
Feedback Voltage
V IN = 9V, I LOAD = 700mA, V PINV = V PWR = 14V,
Topside Switch = N-Ch
V OUT
LTC1266AIS
LTC1266CS, LTC1266IS
Regulated Output Voltage
V IN = 9V, I LOAD = 700mA, V PINV = V PWR = 14,
1.246
1.210
1.265
1.265
1.290
1.290
V
V
Topside Switch = N-Ch
LTC1266CS-3.3, LTC1266IS-3.3
LTC1266CS-5, LTC1266IS-5
3.23
4.90
3.33
5.05
3.43
5.20
V
V
3
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