- 您现在的位置：买卖IC网 > PDF目录14028 > LT1578IS8#TR (Linear Technology)IC REG BUCK ADJ 1.5A 8SOIC PDF资料下载
参数资料
| 型号： | LT1578IS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.5A 8SOIC |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 1.21V |
| 输入电压： | 4 V ~ 15 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
第1页第2页当前第3页第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
LT1578/LT1578-2.5
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at T J = 25 ° C. V IN = 5V, V C = 1.5V, Boost = V IN + 5V, switch open, unless otherwise noted.
PARAMETER
Boost Current (Note 5)
CONDITIONS
I SW = 0.5A
q
MIN
TYP
9
MAX
18
UNITS
mA
V IN Supply Current (Note 6)
I SW = 1.5A
q
q
27
1.9
50
2.7
mA
mA
Shutdown Supply Current
V SHDN = 0V, V IN ≤ 15V, V SW = 0V, V C Open
q
20
50
75
μ A
μ A
Lockout Threshold
Shutdown Thresholds
V C Open
V C Open Device Shutting Down
Device Starting Up
q
q
q
2.34
0.13
0.25
2.42
0.37
0.45
2.50
0.60
0.7
V
V
V
Synchronization Threshold
Synchronizing Range
SYNC Pin Input Resistance
250
1.5
40
2.2
400
V
kHz
k ?
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Gain is measured with a V C swing equal to 200mV above the
switching threshold level to 200mV below the upper clamp level.
Note 3: Minimum input voltage is not measured directly, but is guaranteed
by other tests. It is defined as the voltage where internal bias lines are still
regulated so that the reference voltage and oscillator frequency remain
constant. Actual minimum input voltage to maintain a regulated output will
depend on output voltage and load current. See Applications Information.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 5: Boost current is the current flowing into the boost pin with the pin
held 5V above input voltage. It flows only during switch on time.
Note 7: Switch on resistance is calculated by dividing V IN to V SW voltage
by the forced current (1.5A). See Typical Performance Characteristics for
the graph of switch voltage at other currents.
Note 8: Slope compensation is the current subtracted from the switch
current limit at 80% duty cycle. See Maximum Output Load Current in the
Applications Information section for further details.
Note 9: Minimum on-time is 400ns typical. For a 200kHz operating
frequency this means the minimum duty cycle is 8%. In frequency
foldback mode, the effective duty cycle will be less than 8%.
Note 10: Transconductance and voltage gain refer to the internal amplifier
exclusive of the voltage divider. To calculate gain and transconductance
referred to the sense pin on the fixed voltage parts, divide values shown by
the ratio 2.5/1.21.
Note 6: Input supply current is the bias current drawn by the input pin
with switching disabled.
TYPICAL PERFOR M A N CE CHARACTERISTICS
0.5
Switch Voltage Drop
2.5
Switch Peak Current Limit
1.23
Feedback Pin Voltage
0.4
0.3
25 ° C
125 ° C
–20 ° C
2.0
1.5
TYPICAL
MINIMUM
1.22
1.21
0.2
1.0
0.1
0.5
1.20
0
0
0.25
0.50 0.75 1.00
1.25
1.50
0
0
20
40
60
80
100
1.19
–50 –25 0 25 50 75
100
125
SWITCH CURRENT (A)
1576 G01
DUTY CYCLE (%)
1576 G02
JUNCTION TEMPERATURE ( ° C)
1576 G03
3
相关PDF资料 |
PDF描述 |
|---|---|
| HM79S-125821LFTR13 | SHIELDED DRUM INDUCTORS |
| RCC44DCMD-S288 | CONN EDGECARD 88POS .100 EXTEND |
| HM79S-125681LFTR13 | SHIELDED DRUM INDUCTORS |
| LT1576IS8-5#TRPBF | IC REG BUCK 5V 1.5A 8SOIC |
| EBC60DCMN-S288 | CONN EDGECARD 120POS .100 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1579 | 制造商:LINER 制造商全称:Linear Technology 功能描述:300mA Dual Input Smart Battery Backup Regulator |
| LT1579-3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:300mA Dual Input Smart Battery Backup Regulator |
| LT1579CGN | 功能描述:IC LDO REG SMART DUAL ADJ 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:2,000 系列:Impedance Track™ 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.4 V ~ 2.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:带卷 (TR) 产品目录页面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名称:296-21665-2 |
| LT1579CGN#PBF | 功能描述:IC LDO REG SMART DUAL ADJ 16SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:2,000 系列:Impedance Track™ 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.4 V ~ 2.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:带卷 (TR) 产品目录页面:1020 (CN2011-ZH PDF) 配用:BQ27350EVM-ND - BQ27350EVM 其它名称:296-21665-2 |
| LT1579CGN#TR | 功能描述:IC REG LDO SMART DUAL ADJ 16SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。