参数资料
型号: LT3469ETS8#TRMPBF
厂商: Linear Technology
文件页数: 4/8页
文件大小: 0K
描述: IC AMP DVR W/REG 1.3MHZ TSOT23-8
标准包装: 500
类型: AB 类
输出类型: 1-通道(单声道)
电源电压: 2.5 V ~ 16 V
特点: 差分输入
安装类型: 表面贴装
供应商设备封装: TSOT-23-8
封装/外壳: SOT-23-8 薄型,TSOT-23-8
包装: 带卷 (TR)
其它名称: LT3469ETS8#PBF
LT3469ETS8#PBF-ND
LT3469
4
3469f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
VCC Quiescent Current
Output Current
vs Differential Input Voltage
VCC (V)
15
18
0
I Q
(mA)
1.0
2.5
21
27
30
3469 G01
0.5
2.0
100
°C
25
°C
–50
°C
1.5
24
33
36
DIFFERENTIAL INPUT VOLTAGE (mV)
–50
OUTPUT
CURRENT
(mA)
0
10
20
30
3469 G02
–10
–20
–5
5
15
25
–15
–25
–30
–10
10
–40
40
–20
0
20
50
100
°C
–50
°C
25
°C
(gm Amplifier)
gm vs VCC
VCC (V)
15
g
m
(
A/mV)
100
150
35
3469 G14
50
0
20
25
30
250
200
–50
°C
25
°C
100
°C
UU
U
PI FU CTIO S
OUT (Pin 1): Output of the gm Amplifier. There must be at
least 5nF of capacitive load at the output in a gain of 10
configuration. Capacitive loads up to 300nF can be con-
nected to this pin. Piezo actuators below 5nF can be driven
if capacitance is placed in parallel to bring the total
capacitance to 5nF.
FB (Pin 2): Feedback Pin. Reference voltage is 1.23V.
Connect feedback resistor divider here.
VIN (Pin 3): Input Supply Pin. Must be locally bypassed.
GND (Pin 4): Ground Pin. Connect directly to local ground
plane.
SW (Pin 5): Switch Pin. Connect inductor here. Minimize
trace area at this pin to reduce EMI.
VCC (Pin 6): Output of Switching Regulator and Supply
Rail for gm Amp. There must be 0.22F or more of
capacitance here.
+IN (Pin 7): Noninverting Terminal of the gm Amplifier.
–IN (Pin 8): Inverting Terminal of the gm Amplifier.
BLOCK DIAGRA
W
+
SW
4
5
VCC
2
FB
1.23V
7
1
VIN VCC
+IN
–IN
OUT
GND
3469 F01
Q1
A1
SWITCH
CONTROLLER
6
VIN
3
+
8
gm
Figure 1. LT3469 Block Diagram
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