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| 型号： | LT1610IS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.6A 8SOIC |
| 标准包装： | 100 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.23 V ~ 30 V |
| 输入电压： | 0.9 V ~ 8 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.7MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOIC |
| 产品目录页面： | 1328 (CN2011-ZH PDF) |
LT1610
APPLICATIO N S I N FOR M ATIO N
output capacitor because it introduces a zero in the
regulator’s loop gain. This zero may not be effective
because the ceramic capacitor’s ESR is very low. Most
current mode switching regulators (including the LT1610)
can easily be compensated without this zero. Any design
should be tested for stability at the extremes of operating
temperatures; this is particularly so of circuits that use
V OUT
100mV/DIV
LOAD
CURRENT
105mA
5mA
ceramic output capacitors.
500 μ s/DIV
1610 F10
Figure 9 details a 2.5V to 5V boost converter. Transient
response to a 5mA to 105mA load step is pictured in Figure
10. The “double trace” of V OUT at 105mA load is due to the
ESR of C2. This ESR aids stability. In Figure 11, C2 is
replaced by a 10 μ F ceramic capacitor. Note the low phase
margin; at higher input voltage, the converter may oscil-
late. After replacing the internal compensation network
with an external 220pF/220k series RC, the transient
response is shown in Figure 12. This is acceptable tran-
V OUT
100mV/DIV
LOAD
CURRENT
105mA
Figure 10. Tantalum Output Capacitor
and Internal RC Compensation
sient response.
5mA
500 μ s/DIV
1610 F11
Table 1
FIGURE
10
11
12
C2
AVX TAJA226M006 Tantalum
Taiyo Yuden JMK316BJ106
Taiyo Yuden JMK316BJ106
COMPENSATION
Internal
Internal
220pF/220k
Figure 11. 10 μ F X5R-Type Ceramic Output Capacitor
and Internal RC Compensation has Low Phase Margin
V IN
2.5V
L1
10 μ H
D1
V OUT
5V
100mA
V OUT
100mV/DIV
LOAD
+
C1
22 μ F
3
1
6
V IN
SHDN
V C
LT1610
5
SW
FB
GND
2
7
1M
R2
324k
+
C2
22 μ F
CURRENT
105mA
5mA
500 μ s/DIV 1610 F12
Figure 12. Ceramic Output Capacitor with 220pF/220k
External Compensation has Adequate Phase Margin
R C
C C
C1: AVX TAJA226M006
COMP
8
PGND
4
1610 F09
C2: SEE TABLE
D1: MOTOROLA MBR0520
L1: MURATA LQH30100
Figure 9. 2.5V to 5V Boost Converter Can Operate with a
Ceramic Output Capacitor as Long as Proper R C and C C
are Used. Disconnect COMP Pin if External Compensation
Components Are Used
10
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相关代理商/技术参数 |
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| LT1611 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Low Dropout Regulators with Shutdown |
| LT-1611-401-012-XSP1 | 制造商:Carling Technologies 功能描述:LT-SERIES TOGGLE SWITCH - Bulk |
| LT1611CS5 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Inv 0.9V to 10V 5-Pin TSOT-23 |
| LT1611CS5#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Inv 0.9V to 10V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:IC INVERTING REGULATOR 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23; Primary Input Voltage:10V; No. of Outputs:1; Output Voltage:-5V; Output Current:150mA; No. of Pins:5; Operating Temperature Min:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT1611CS5#TR | 功能描述:IC REG INV ADJ 0.3A SOT23-5 RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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