参数资料
型号: LT1370IR#TRPBF
厂商: Linear Technology
文件页数: 5/16页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ 6A D2PAK
标准包装: 750
类型: 降压(降压),升压(升压),反相,Cuk,回扫,正向转换器
输出类型: 可调式
输出数: 1
输出电压: 1.25 V ~ 35 V
输入电压: 2.7 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 500kHz
电流 - 输出: 6A
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: TO-263-8,D²Pak(7 引线+接片),TO-263CA
包装: 带卷 (TR)
供应商设备封装: D2PAK-7
LT1370
TYPICAL PERFOR M A N CE CHARACTERISTICS
2.2
V C Pin Threshold and High
Clamp Voltage vs Temperature
800
Feedback Input Current
vs Temperature
0
Negative Feedback Input Current
vs Temperature
2.0
700
V FB =V REF
–10
V NFB =V NFR
600
1.8
1.6
1.4
1.2
V C HIGH CLAMP
V C THRESHOLD
500
400
300
200
100
–20
–30
–40
1.0
–50 –25
0
25
50
75
100 125 150
0
–50 –25
0
25
50
75
100 125 150
–50
–50 –25
0
25
50
75
100 125 150
TEMPERATURE ( ° C)
PI N FU N CTIO N S
LT1370 ? G10
TEMPERATURE ( ° C)
LT1370 ? G11
TEMPERATURE ( ° C)
LT1370 ? G12
V C : The Compensation pin is used for frequency compen-
sation, current limiting and soft start. It is the output of the
error amplifier and the input of the current comparator.
Loop frequency compensation can be performed with an
RC network connected from the V C pin to ground. See
Applications Information.
FB: The Feedback pin is used for positive output voltage
sensing and oscillator frequency shifting. It is the invert-
ing input to the error amplifier. The noninverting input of
this amplifier is internally tied to a 1.245V reference.
NFB: The Negative Feedback pin is used for negative
output voltage sensing. It is connected to the inverting
input of the negative feedback amplifier through a 100k
source resistor.
S/S: Shutdown and Synchronization Pin. The S/S pin is
logic level compatible. Shutdown is active low and the
shutdown threshold is typically 1.3V. For normal opera-
tion, pull the S/S pin high, tie it to V IN or leave it floating. To
synchronize switching, drive the S/S pin between 600kHz
and 800kHz. See Applications Information.
V IN : Bypass Input Supply Pin with a Low ESR Capacitor,
10 μ F or More. The regulator goes into undervoltage lock-
out when V IN drops below 2.5V. Undervoltage lockout
stops switching and pulls the V C pin low.
V SW : The Switch pin is the collector of the power switch
and has large currents flowing through it. Keep the traces
to the switching components as short as possible to
minimize radiation and voltage spikes.
GND: Tie all ground pins to a good quality ground plane.
See Applications Information.
sn1370 1370fs
5
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