参数资料
型号: LTC3415EUHF#TRPBF
厂商: Linear Technology
文件页数: 3/28页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 7A 38QFN
标准包装: 2,500
系列: PolyPhase®
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.7 V ~ 5.5 V
输入电压: 2.5 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 1.5MHz
电流 - 输出: 7A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 38-WFQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 38-QFN(5x7)
LTC3415
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 3.3V unless otherwise speci?ed.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I Q
Input DC Bias Current
(Note 4)
Active Current
Sleep
V FB = 0.57V, MODE = 0V
V FB = 0.63V, MODE = V IN
1350
450
μA
μA
Shutdown
V RUN = 0V
0.2
5
μA
f OSC
f SYNC
R PFET
R NFET
Switching Frequency
SYNC Capture Range
R DS(ON) of P-Channel FET
R DS(ON) of N-Channel FET
I SW = 100mA
I SW = 100mA
1.3
0.75
1.5
32
25
1.7
2.25
40
32
MHz
MHz
I LIMIT
V UVLO
I LSW
Peak Current Limit
Undervoltage Lockout Threshold
SW Leakage Current
V ITH = 1V (Note 6)
SV IN Rising
SV IN Falling
V RUN = 0V, V IN = 5.5V
11
2.05
1.85
13
2.2
2.0
0.1
15
2.35
2.15
5
A
V
V
μA
SS Delay
Internal Soft-Start Delay
140
μs
g m
Error Ampli?er’s Transconductance
1.7
2
2.2
mmho
RUN
Run Input Threshold
RUN Rising
RUN Falling
1.4
1.2
1.5
1.3
1.6
1.4
V
V
PGOOD Delay
PGOOD Falling Edge Delay
35
μs
% MARGINING
TRACK
Output Voltage Margining Percentage
Tracking Threshold (Rising)
MGN HI, BSEL LOW
MGN HI, BSEL HI
MGN HI, BSEL = SV IN /2
MGN LOW, BSEL LOW
MGN LOW, BSEL HI
MGN LOW, BSEL = SV IN /2
RUN = V IN
3
8
13
–3
–8
–13
5
10
15
–5
–10
–15
0.57
7
12
17
–7
–12
–17
%
%
%
%
%
%
V
Tracking Threshold (Falling)
Tracking Disable Threshold
RUN = 0V
0.18
V IN – 0.5
V
V
V FB Slavemode
I TH Internal
V FB Slavemode (EA Disable) Threshold
Switch Over Threshold for Internal
V IN – 0.5
V IN – 0.5
V
V
Compensation
OV
UV
V HYST
Output Overvoltage Threshold
Output Undervoltage Threshold
OV/UV Hysteresis
V FB Rising
V FB Falling
V FB Returning to Regulation
7
–7
10
–10
1
13
–13
3
%
%
%
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 LTC3415E is guaranteed to meet performance 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.
Note 3: The LTC3415 is tested in a feedback loop that adjusts V FB to
Note 5: T J is calculated from the ambient temperature T A and power
dissipation as follows: LTC3415: T J = T A + P D (34°C/W).
Note 6: Current Limit is measured with internal servo loop while forcing
V ITH = 1V.
Note 7: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may impair device reliability.
achieve a speci?ed error ampli?er output voltage (I TH ).
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
3415fa
3
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