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参数资料
| 型号： | LTC3829IUHF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/40页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 38-QFN |
| 标准包装： | 2,500 |
| 系列： | PolyPhase® |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 850kHz |
| 占空比： | 94% |
| 电源电压： | 4.5 V ~ 38 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： | 38-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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LTC3829
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at T A = 25°C. V IN = 15V, V RUN = 5V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Nonlinear Fas t Transit Mode
I FAST
Fast Transient Programmable Current
V IFAST = 400mV
9
10
11
μA
AVP (Active Voltage Positioning)
I SINK
I SOURCE
Sink Current of AVP Pin
Source Current of AVP Pin
SENSE + = 1.2V
SENSE + = 1.2V
250
2
μA
mA
V AVP -V O(MAX) Maximum Voltage Drop V AVP to V O
SENSE + = 1.2V
180
mV
V AVP
Maximum AVP Voltage
l
2.5
V
On-Chip Drive r
TG R UP
TG R DOWN
BG R UP
BG R DOWN
TG Pull-Up R DS(ON)
TG Pull-Down R DS(ON)
BG Pull-Up R DS(ON)
BG Pull-Down R DS(ON)
TG High
TG Low
BG High
BG Low
2.6
1.5
4
1.1
Ω
Ω
Ω
Ω
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 LTC3829 is tested under pulsed load conditions such that
T J ≈ T A . The LTC3829E is guaranteed to meet performance specifications
from 0°C to 85°C operating 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 LTC3829I is guaranteed to meet performance specifications over the
full –40°C to 125°C operating junction temperature range.
Note 4: The LTC3829 is tested in a feedback loop that servos V ITH to a
specified voltage and measures the resultant V FB .
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7: The minimum on-time condition corresponds to the on inductor
peak-to-peak ripple current ≥40% of I MAX (see Minimum On-Time
Considerations in the Applications Information section).
Note 8: Guaranteed by design.
Note 3: T J is calculated from the ambient temperature, T A , and power
dissipation, P D , according to the following formula:
LTC3829UHF: T J = T A + (P D ? 34°C/W)
LTC3829FE: T J = T A + (P D ? 25°C/W)
TYPICAL PERFORMANCE CHARACTERISTICS
Load Step-Up (0A to 75A, 75A/μs)
(Nonlinear Operation)
Load Step-Up (0A to 75A, 75A/μs)
(Normal Operation)
V OUT
100mV/DIV
AC-COUPLED
V SW1
10V/DIV
V SW2
10V/DIV
V SW3
10V/DIV
75mV
V OUT
100mV/DIV
AC-COUPLED
V SW1
10V/DIV
V SW2
10V/DIV
V SW3
10V/DIV
95mV
2μs/DIV
3829 G01
2μs/DIV
3829 G02
3829fa
For more information www.linear.com/LTC3829
5
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| MC10EL01DTR2G | 功能描述:逻辑门 5V ECL 4-Input OR/NOR RoHS:否 制造商:Texas Instruments 产品:OR 逻辑系列:LVC 栅极数量:2 线路数量（输入/输出）:2 / 1 高电平输出电流:- 16 mA 低电平输出电流:16 mA 传播延迟时间:3.8 ns 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:DCU-8 封装:Reel |
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