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| 型号： | LTC3611EWP#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 10A 64QFN |
| 标准包装： | 40 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 32 V |
| 输入电压： | 4.5 V ~ 32 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 10A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-VFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 64-QFN（9x9） |
LTC3611
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 = 15V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Internal V CC Regulator
V INTVCC
ΔV LDO(LOADREG)
V EXTVCC
ΔV EXTVCC
Internal V CC Voltage
Internal V CC Load Regulation
EXTV CC Switchover Voltage
EXTV CC Switch Drop Voltage
6V < V IN < 30V, V EXTVCC = 4V
I CC = 0mA to 20mA, V EXTVCC = 4V
I CC = 20mA, V EXTVCC Rising
I CC = 20mA, V EXTVCC = 5V
l
l
4.7
4.5
5
–0.1
4.7
150
5.6
±2
300
V
%
V
m/V
ΔV EXTVCC(HYS)
EXTV CC Switchover Hysteresis
500
m/V
PGOOD Output
ΔV FBH
ΔV FBL
ΔV FB(HYS)
V PGL
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
V FB Rising
V FB Falling
V FB Returning
I PGOOD = 5mA
7
–7
10
–10
1
0.15
13
–13
2.5
0.4
%
%
%
V
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: T J is calculated from the ambient temperature T A and power
dissipation P D as follows:
T J = T A + (P D ? 28°C/W) ( θ JA is simulated per JESD51-7 high
effective thermal conductivity test board)
θ JC = 1°C/W ( θ JC is simulated when heatsink is applied at the
bottom of the package)
Note 4: The LTC3611 is tested under pulsed load conditions such that
T J ≈ T A . The LTC3611E is guaranteed to meet speci?cations from
0°C to 125°C junction temperature. Speci?cations over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3611I is guaranteed over the full –40°C to 125°C operating junction
temperature range. Note that the maximum ambient temperature
consistent with these speci?cations is determined by speci?c operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors.
Note 3: The LTC3611 is tested in a feedback loop that adjusts V FB to
achieve a speci?ed error ampli?er output voltage (I TH ). The speci?cation at
85°C is not tested in production. This speci?cation is assured by design,
characterization, and correlation to testing at 125°C.
TYPICAL PERFORMANCE CHARACTERISTICS
V OUT
200mV/DIV
IL
5A/DIV
I LOAD
5A/DIV
Transient Response
V OUT
200mV/DIV
IL
5A/DIV
I LOAD
5A/DIV
Transient Response
(Discontinuous Mode)
RUN/SS
2V/DIV
V OUT
1V/DIV
I L
5A/DIV
Start-Up
40μs/DIV
3611 G01
40μs/DIV
3611 G02
40ms/DIV
3611 G03
LOAD STEP 0A TO 8A
V IN = 25V
V OUT = 2.5V
FCB = 0
FIGURE 6 CIRCUIT
LOAD = 1A TO 10A
V IN = 25V
V OUT = 2.5V
FCB = INTV CC
FIGURE 6 CIRCUIT
V IN = 25V
V OUT = 2.5V
R LOAD = 0.5
FIGURE 6 CIRCUIT
3611fd
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