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参数资料
型号： LT1683EG
厂商： LINEAR TECHNOLOGY CORP
元件分类： 稳压器
英文描述： Ultralow Noise Push-Pull DC/DC Controller
中文描述： SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO20
封装： 5.30 MM, PLASTIC, SSOP-20
文件页数： 3/24页
文件大小： 237K
代理商： LT1683EG
3
LT1683
1683f
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25
°
C. V
IN
= 12V, V
C
= 0.9V, V
FB
= V
REF
, R
VSL
, R
CSL
= 16.9k, R
T
= 16.9k and
other pins open unless otherwise noted.
The
G
denotes the specifications which apply over the full operating
Oscillator and Sync
f
MAX
f
SYNC
V
SYNC
R
SYNC
Gate Drives (Specifications Apply to Either A or B Unless Otherwise Noted)
DC
MAX
Maximum Switch Duty Cycle
Max Switch Frequency
Synchronization Frequency Range
SYNC Pin Input Threshold
SYNC Pin Input Resistance
250
kHz
kHz
Oscillator Frequency = 250kHz
290
0.7
G
1.4
40
2.0
k
R
VSL
= R
CSL
= 4.85k,
Osc Frequency = 25kHz
V
IN
= 12, GCL = 12
V
IN
= 12, GCL = 8
V
IN
= 12V
V
IN
= 12V
V
IN
= 12V
V
GCL
= 6.5V, Gates Enabled
G
45
46
%
VG
ON
Gate On Voltage
10
7.6
10.4
7.9
0.2
10.7
8.1
0.35
V
V
V
A
A
V
VG
OFF
IG
SO
IG
SK
V
INUVLO
Current Sense
t
IBL
V
SENSE
V
SENSEF
Slew Control (for the Following Slew Tests See Test Circuit in Figure 1b)
V
SLEWR
Output Voltage Slew Rising Edge
V
SLEWF
Output Voltage Slew Falling Edge
VI
SLEWR
Output Current Slew Rising Edge (CS Pin Voltage)
VI
SLEWF
Output Current Slew Falling Edge (CS Pin Voltage)
Supply and Protection
V
INMIN
Minimum Input Voltage (Note 4)
I
VIN
Supply Current (Note 2)
Gate Off Voltage
Max Gate Source Current
Max Gate Sink Current
Gate Drive Undervoltage Lockout (Note 5)
0.3
0.3
7.3
7.5
Switch Current Limit Blanking Time
Sense Voltage Shutdown Voltage
Sense Voltage Fault Threshold
100
103
230
ns
mV
mV
V
C
Pulled Low
G
86
120
300
G
R
VSL
= R
CSL
= 17k
R
VSL
= R
CSL
= 17k
R
VSL
= R
CSL
= 17k
R
VSL
= R
CSL
= 17k
26
19
2.1
2.1
V/
μ
s
V/
μ
s
V/
μ
s
V/
μ
s
V
GCL
= V
IN
R
VSL
= R
CSL
= 17k, V
IN
= 12
R
VSL
= R
CSL
= 17k, V
IN
= 20
G
2.55
25
35
1.39
110
24
5
5
3.6
45
55
1.48
180
35
5.20
5.15
V
G
G
mA
mA
V
SHDN
V
SHDN
I
SHDN
V5
Shutdown Turn-On Threshold
Shutdown Turn-On Voltage Hysteresis
Shutdown Input Current Hysteresis
5V Reference Voltage
G
1.31
50
10
4.85
4.80
10
–10
V
G
mV
μ
A
G
6.5V
≤
V
IN
≤
20V, IV5 = 5mA
6.5V
≤
V
IN
≤
20V, IV5 = –5mA
V
IN
= 6.5V Source
V
IN
= 6.5V Sink
V
V
IV5
SC
5V Reference Short-Circuit Current
mA
mA
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Absolute Maximum Ratings are those values beyond which the
life of a device may be impaired.
Note 2:
Supply current specification includes loads on each gate as in
Figure 1a. Actual supply currents vary with operating frequency, operating
voltages, V5 load, slew rates and type of external FET.
Note 3:
The LT1683E is guaranteed to meet performance specifications
from 0
°
C to 70
°
C. Specifications over the –40
°
C to 125
°
C operating range
are assured by design, characterization and correlation with statistical
process controls. The LT1683I is guaranteed and tested over the –40
°
to
125
°
operating temperature range.
Note 4:
Output gate drivers will be enabled at this voltage. The GCL
voltage will also determine drivers’ activity.
Note 5:
Gate drivers are ensured to be on when V
IN
is greater than the
maximum value.
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相关代理商/技术参数
参数描述
LT1683EG#PBF 功能描述:IC REG CTRLR PWM CM 20-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 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:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR
LT1683EG#TR 功能描述:IC REG CTRLR PWM CM 20-SSOP 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
LT1683EG#TRPBF 功能描述:IC REG CTRLR PWM CM 20-SSOP 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: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
LT1683IG 功能描述:IC REG CTRLR PWM CM 20-SSOP 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
LT1683IG#PBF 功能描述:IC REG CTRLR PWM CM 20-SSOP 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: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
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