参数资料
型号: LTC1266IS#TR
厂商: Linear Technology
文件页数: 2/20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:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
包装: 带卷 (TR)
LTC1266
LTC1266-3.3/LTC1266-5
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
Input Supply Voltage (Pins 2, 5) ............... 20V to – 0.3V
TOP VIEW
ORDER PART
Continuous Output Current (Pins 1, 16) .............. 50mA
TDRIVE 1
16 BDRIVE
NUMBER
LTC1266CS
LTC1266CS-3.3
LTC1266CS-5
11 SHDN LTC1266ACS
Sense Voltages (Pins 8, 9) ....................... 13V to –0.3V
SHDN Voltage (Pin 11) ............................. 12V to – 0.3V
PINV, BINH, LB IN (Pins 3, 4, 13)................20V to – 0.3V
LB OUT Output Current ........................................... 12mA
Operating Ambient Temperature Range ...... 0 ° C to 70 ° C
Industrial Temperature Range ................ – 40 ° C to 85 ° C
Extended Commercial
Temperature Range ........................... – 40 ° C to 85 ° C
Junction Temperature (Note 2) ............................ 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
PWR V IN 2 15 PGND
PINV 3 14 LB OUT
BINH 4 13 LB IN
V IN 5 12 SGND
C T 6
I TH 7 10 V FB (NC*) LTC1266IS
SENSE – 8 9 SENSE + LTC1266IS-3.3
LTC1266IS-5
S PACKAGE
16-LEAD PLASTIC SO LTC1266AIS
*FIXED OUTPUT VERSIONS
T JMAX = 125 ° C, θ JA = 110 ° C/ W
Consult factory for Industrial and Military grade parts.
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 FB
Feedback Voltage
V IN = 9V, I LOAD = 700mA, V PINV = V PWR = 14V,
Topside Switch = N-Ch
LTC1266ACS
LTC1266CS
q
q
1.252
1.210
1.265
1.265
1.278
1.290
V
V
I FB
Feedback Current (LTC1266 Only)
q
0.2
1
μ A
V OUT
Regulated Output Voltage
V IN = 9V, I LOAD = 700mA, V PINV = V PWR = 14V,
Topside Switch = N-Ch
LTC1266CS-3.3
LTC1266CS-5
q
q
3.23
4.90
3.33
5.05
3.43
5.20
V
V
? V OUT
Output Ripple (Burst Mode Operation) I LOAD = 150mA
Output Voltage Line Regulation I LOAD = 50mA
50
mV P-P
V PINV = 0V, Topside Switch = P-Ch, V IN = 7V to 12V
V PINV = V PWR , Topside Switch = N-Ch, V IN = 7V to 12V
– 40
– 40
0
0
40
40
mV
mV
Output Voltage Load Regulation
5mA < I LOAD < 2A, R SENSE = 0.05 ?
LTC1266-3.3
LTC1266-3.3
LTC1266-5
LTC1266-5
Burst Mode Operation Enabled, V BINH = 0V
Burst Mode Operation Inhibited, V BINH = 2V
Burst Mode Operation Enabled, V BINH = 0V
Burst Mode Operation Inhibited, V BINH = 2V
q
q
q
q
40
15
60
25
65
25
100
40
mV
mV
mV
mV
I Q1
V IN Pin DC Supply Current (Note 3)
Normal Mode
Sleep Mode
Shutdown
3.5V < V IN < 18V
3.5V < V IN < 18V
V SHDN = 2.1V, 3.5V < V IN < 18V
2.1
170
25
3.0
250
50
mA
μ A
μ A
I Q2
PWR V IN DC Supply Current (Note 3)
Normal Mode
Sleep Mode
Shutdown
3.5V < PWR V IN < 18V
3.5V < PWR V IN < 18V
V SHDN = 2.1V, 3.5V < PWR V IN < 18V
20
1
1
40
5
5
μ A
μ A
μ A
2
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