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参数资料
| 型号： | LTC1772BES6#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM SOT23-6 |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 650kHz |
| 占空比： | 100% |
| 电源电压： | 2.5 V ~ 9.8 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 ~ 85°C |
| 封装/外壳： | SOT-23-6 细型，TSOT-23-6 |
| 包装： | 剪切带 (CT) |
| 其它名称： | LTC1772BES6 LTC1772BES6#TRMCT LTC1772BES6-ND |
LTC1772B
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 4.2V unless otherwise speci?ed. (Note 2)
PARAMETER
V FB Input Current
Overvoltage Protect Threshold
CONDITIONS
(Note 5)
Measured at V FB
MIN
0.820
TYP
10
0.860
MAX
50
0.895
UNITS
nA
V
Overvoltage Protect Hysteresis
20
mV
Oscillator Frequency
V FB = 0.8V
500
550
650
kHz
V FB = 0V
120
kHz
Gate Drive Rise Time
Gate Drive Fall Time
Peak Current Sense Voltage
C LOAD = 3000pF
C LOAD = 3000pF
(Note 6)
40
40
105
ns
ns
mV
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 LTC1772BE is guaranteed to meet speci?cations from 0°C to
85°C. Speci?cations over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical
process controls. The LTC1772BI is guaranteed to meet speci?cations over
the full –40°C to 85°C operating temperature range.
Note 3: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
T J = T A + (P D ? θ JA °C/W)
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 5: The LTC1772B is tested in a feedback loop that servos V FB to the
output of the error ampli?er.
Note 6: Peak current sense voltage is reduced dependent on duty cycle to
a percentage of value as given in Figure 2.
1772bfa
3
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| LTC1772BIS6#PBF | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Step Down 2.5V to 9.8V Input 6-Pin TSOT-23 |
| LTC1772BIS6#TRMPBF | 功能描述:IC REG CTRLR BUCK PWM TSOT23-6 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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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