- 您现在的位置：买卖IC网 > PDF目录13860 > LT1976HFE#PBF (Linear Technology)IC REG BUCK ADJ 1.5A 16TSSOP PDF资料下载
参数资料
| 型号： | LT1976HFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.5A 16TSSOP |
| 标准包装： | 95 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 54 V |
| 输入电压： | 3.3 V ~ 60 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
LT1976/LT1976B
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full –40 ° C to 140 ° C
operating temperature range, otherwise specifications are at T J = 25 ° C. V IN = 12V, SHDN = 12V, BOOST = 15.3V, BIAS = 5V,
FB/PGFB = 1.25V, C SS /SYNC = 0V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I PK
SW Current Limit
2.4
A
Switch On Resistance (Note 9)
●
0.2
0.6
Ω
Switching Frequency
BOOST = OPEN
●
150
200
260
kHz
Maximum Duty Cycle
90
92
%
Minimum SYNC Amplitude
1.5
2.0
V
SYNC Frequency Range
SYNC Input Impedance
SYNC = 0.5V
230
600
85
kHz
k Ω
I CSS
I PGFB
C SS Current Threshold (Note 10)
PGFB Input Current
7
13
25
20
100
μ A
nA
V PGFB
I CT
PGFB Voltage Threshold (Note 11)
C T Source Current (Note 11)
●
●
87
1.5
90
3.6
93
5.5
%
μ A
C T Sink Current (Note 11)
1
2
mA
V CT
C T Voltage Threshold (Note 11)
PG Leakage (Note 11)
PG Sink Current (Note 11)
PG = 12V
PGFB = 1V, PG = 400mV
1.16
120
1.2
0.1
200
1.26
1
V
μ A
μ A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT1976EFE/LT1976BEFE are guaranteed to meet performance
specifications from 0 ° C to 125 ° C junction temperature. Specifications over
the –40 ° C to 125 ° C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT1976IFE/LT1976BIFE/LT1976HFE are guaranteed and tested over
the full –40 ° C to 125 ° C operating junction temperature range. The
LT1976HFE is also tested to the LT1976HFE electrical characteristics table
at 140 ° C operating junction temperature. High junction temperatures
degrade operating lifetimes.
Note 3: Minimum input voltage is defined as the voltage where switching
starts. Actual minimum input voltage to maintain a regulated output will
depend upon output voltage and load current. See Applications
Information.
Note 4: Supply input current is the quiescent current drawn by the input
pin. Its typical value depends on the voltage on the BIAS pin and operating
state of the LT1976. With the BIAS pin at 0V, all of the quiescent current
required to operate the LT1976 will be provided by the V IN pin. With the
Note 5: Minimum BIAS voltage is the voltage on the BIAS pin when I BIAS is
sourced into the pin.
Note 6: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 7: Boost current is the current flowing into the BOOST pin with the
pin held 3.3V above input voltage. It flows only during switch on time.
Note 8: Gain is measured with a V C swing from 1.15V to 750mV.
Note 9: Switch on resistance is calculated by dividing V IN to SW voltage by
the forced current (1.5A LT1976, 1.2A LT1976B). See Typical Performance
Characteristics for the graph of switch voltage at other currents.
Note 10: The C SS threshold is defined as the value of current sourced into
the C SS pin which results in an increase in sink current from the V C pin.
See the Soft-Start section in Applications Information.
Note 11: The PGFB threshold is defined as the percentage of V REF voltage
which causes the current source output of the C T pin to change from
sinking (below threshold) to sourcing current (above threshold). When
sourcing current, the voltage on the C T pin rises until it is clamped
internally. When the clamp is activated, the output of the PG pin will be set
to a high impedance state. When the C T clamp is inactive the PG pin will
be set active low with a current sink capability of 200 μ A.
BIAS voltage above its minimum input voltage, a portion of the total
quiescent current will be supplied by the BIAS pin. Supply sleep current
for the LT1976 is defined as the quiescent current during the “sleep”
portion of Burst Mode operation. See Applications Information for
determining application supply currents.
1976bfg
4
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6716AUTWGD1+T | IC SUPERVISOR MPU SOT23-6 |
| HSM22DSXN | CONN EDGECARD 44POS DIP .156 SLD |
| EMM12DTBD | CONN EDGECARD 24POS R/A .156 SLD |
| LT1269CSW#TR | IC REG BUCK INV FLYBK 4A 20SOIC |
| MAX6716AUTWED5+T | IC SUPERVISOR MPU SOT23-6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1976IFE | 功能描述:IC REG BUCK ADJ 1.5A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT1976IFE#PBF | 功能描述:IC REG BUCK ADJ 1.5A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT1976IFE#PBF | 制造商:Linear Technology 功能描述:DC/DC Converter IC |
| LT1976IFE#TR | 功能描述:IC REG BUCK ADJ 1.5A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT1976IFE#TRPBF | 功能描述:IC REG BUCK ADJ 1.5A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
发布紧急采购，3分钟左右您将得到回复。