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参数资料
| 型号： | LTC1159CG-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 20-SSOP |
| 标准包装： | 66 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 250kHz |
| 占空比： | 100% |
| 电源电压： | 4 V ~ 40 V |
| 降压： | 是 |
| 升压： | 无 |
| 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： | 20-SSOP（0.209"，5.30mm 宽） |
| 包装： | 管件 |
LTC1159
LTC1159-3.3/LTC1159-5
ELECTRICAL C HARA C TERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V IN = 12V, V SHDN1 = 0V (Note 3), unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V CC
V IN – V CC
V EXT – V CC
Internal Regulator Voltage
V CC Dropout Voltage
EXTV CC Switch Drop
V IN = 12V to 40V, EXTV CC = 0V, I CC = 10mA
V IN = 4V, EXTV CC = Open, I CC = 10mA
V IN = 12V, EXTV CC = 5V, I SWITCH = 10mA
q
4.25
4.5
300
250
4.75
400
350
V
mV
mV
V P-GATE – V IN P-Gate to Source Voltage (Off)
V IN = 12V
V IN = 40V
– 0.2
– 0.2
0
0
V
V
V SENSE + –
V SENSE –
Current Sense Threshold Voltage
LTC1159
LTC1159-3.3
LTC1159-5
V SENSE – = 5V, V FB = 1.32V (Forced)
V SENSE – = 5V, V FB = 1.15V (Forced)
V SENSE – = 3.4V (Forced)
V SENSE – = 3.1V (Forced)
V SENSE – = 5.2V (Forced)
V SENSE – = 4.7V (Forced)
q
q
q
130
130
130
25
150
25
150
25
150
170
170
170
mV
mV
mV
mV
mV
mV
V SNDN1
SHDN1 Threshold
LTC1159CG, LTC1159-3.3, LTC1159-5
0.5
0.8
2
V
V SHDN2
I SHDN2
SHDN2 Threshold
Shutdown 2 Input Current
V SHDN2 = 5V
0.8
1.4
12
2
20
V
μ A
I CT
t OFF
t r , t f
C T Pin Discharge Current
Off-Time (Note 5)
Driver Output Transition Times
V OUT in Regulation
V OUT = 0V
C T = 390pF, I LOAD = 700mA, V IN = 10V
C L = 3000pF (Pins P-Drive and N-Gate), V IN = 6V
50
4
70
2
5
100
90
10
6
200
μ A
μ A
μ s
ns
– 40 ° C ≤ T A ≤ 85 ° C (Note 6)
SYMBOL
V FB
PARAMETER
Feedback Voltage (LTC1159 Only)
CONDITIONS
MIN
1.2
TYP
1.25
MAX
1.3
UNITS
V
V OUT
Regulated Output Voltage
V IN = 9V
I IN
I EXTVCC
V CC
LTC1159-3.3
LTC1159-5
V IN Pin Current (Note 4)
Normal
Shutdown
EXTV CC Pin Current (Note 4)
Internal Regulator Voltage
I LOAD = 700mA
I LOAD = 700mA
V IN = 12V, EXTV CC = 5V
V IN = 40V, EXTV CC = 5V
V IN = 12V, V SHDN2 = 2V
V IN = 40V, V SHDN2 = 2V
EXTV CC = 5V, Sleep Mode
V IN = 12V to 40V, EXTV CC = 0V, I CC = 10mA
3.17
4.85
3.30
5.05
200
300
15
25
250
4.5
3.43
5.25
V
V
μ A
μ A
μ A
μ A
μ A
V
V SENSE + –
V SENSE –
V SHDN2
t OFF
Current Sense Threshold Voltage
SHDN2 Threshold
Off-Time (Note 5)
Low Threshold (Forced)
High Threshold (Forced)
C T = 390pF, I LOAD = 700mA, V IN = 10V
125
0.8
3.5
25
150
1.4
5
175
2
6.5
mV
mV
V
μ s
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formulas:
LTC1159CG, LTC1159CG-3.3, LTC1159CG-5: T J = T A + (P D ? 135 ° C/W)
LTC1159CN, LTC1159CN-3.3, LTC1159CN-5: T J = T A + (P D ? 80 ° C/W)
LTC1159CS, LTC1159CS-3.3, LTC1159CS-5: T J = T A + (P D ? 110 ° C/W)
Note 3: On LTC1159 versions which have a SHDN1 pin, it must be at
ground potential for testing.
Note 4: The LTC1159 V IN and EXTV CC current measurements exclude
MOSFET driver currents. When V CC power is derived from the output via
EXTV CC , the input current increases by (I GATECHG ? Duty Cycle)/(Efficiency).
See Typical Performance Characteristics and Applications Information.
Note 5: In applications where R SENSE is placed at ground potential, the off-
time increases approximately 40%.
3
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相关代理商/技术参数 |
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| LTC1159CN | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159CN-3.3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159CN-5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1159CS | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1159CS#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,000 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:50% 电源电压:9 V ~ 10 V 降压:无 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:8-TSSOP（0.173"，4.40mm 宽） 包装:带卷 (TR) |
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