参数资料
| 型号： | LT3013MPFE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .25A 16-TSSOP |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 95 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.24 V ~ 60 V |
| 输入电压： | 4 V ~ 80 V |
| 电压 - 压降（标准）： | 0.4V @ 250mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 250mA |
| 电流 - 限制（最小）： | 250mA |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 管件 |
LT3013
APPLICATIONS INFORMATION
Extra consideration must be given to the use of ceramic
capacitors. Ceramic capacitors are manufactured with a
variety of dielectrics, each with different behavior across
temperature and applied voltage. The most common
dielectrics used are speci?ed with EIA temperature
characteristic codes of Z5U, Y5V, X5R and X7R. The Z5U and
Y5V dielectrics are good for providing high capacitances
in a small package, but they tend to have strong voltage
and temperature coef?cients as shown in Figures 2
and 3. When used with a 5V regulator, a 16V 10μF Y5V
capacitor can exhibit an effective value as low as 1μF to
2μF for the DC bias voltage applied and over the operating
temperature range. The X5R and X7R dielectrics result in
more stable characteristics and are more suitable for use
as the output capacitor. The X7R type has better stability
across temperature, while the X5R is less expensive and is
available in higher values. Care still must be exercised when
using X5R and X7R capacitors; the X5R and X7R codes
only specify operating temperature range and maximum
capacitance change over temperature. Capacitance change
due to DC bias with X5R and X7R capacitors is better than
Y5V and Z5U capacitors, but can still be signi?cant enough
to drop capacitor values below appropriate levels. Capacitor
Voltage and temperature coef?cients are not the only
sources of problems. Some ceramic capacitors have a
piezoelectric response. A piezoelectric device generates
voltage across its terminals due to mechanical stress, simi-
lar to the way a piezoelectric accelerometer or microphone
works. For a ceramic capacitor the stress can be induced
by vibrations in the system or thermal transients.
PWRGD Flag and Timing Capacitor Delay
The PWRGD ?ag is used to indicate that the ADJ pin volt-
age is within 10% of the regulated voltage. The PWRGD
pin is an open-collector output, capable of sinking 50μA
of current when the ADJ pin voltage is low. There is no
internal pull-up on the PWRGD pin; an external pull-up
resistor must be used. When the ADJ pin rises to within
10% of its ?nal reference value, a delay timer is started.
At the end of this delay, programmed by the value of the
capacitor on the C T pin, the PWRGD pin switches to a high
impedance and is pulled up to a logic level by an external
pull-up resistor.
To calculate the capacitor value on the C T pin, use the
following formula:
DC bias characteristics tend to improve as component
case size increases, but expected capacitance at operating
voltage should be veri?ed.
C TIME =
I CT ? t DELAY
V CT ( HIGH ) – V CT ( LOW )
20
0
BOTH CAPACITORS ARE 16V,
1210 CASE SIZE, 10μF
40
20
–20
X5R
0
X5R
–20
–40
–40
Y5V
–60
Y5V
–60
–80
–80
BOTH CAPACITORS ARE 16V,
–100
0
2
4
6
8
10
12
14
16
–100
1210 CASE SIZE, 10μF
–50 –25 0 25
50
75
100
125
DC BIAS VOLTAGE (V)
3013 F02
Figure 2. Ceramic Capacitor DC Bias Characteristics
TEMPERATURE (°C)
3013 F03
Figure 3. Ceramic Capacitor Temperature Characteristics
3013fe
13
相关PDF资料 |
PDF描述 |
|---|---|
| LT3014HVIS5#TRPBF | IC REG LDO ADJ 20MA SOT23-5 |
| LT3015MPQ-5#TRPBF | IC REG LDO -5V 1.5A DDPAK-5 |
| LT3020IDD#TRPBF | IC REG LDO ADJ .1A 8-DFN |
| LT3021IS8-1.8#TRPBF | IC REG LDO 1.8V .5A 8-SOIC |
| LT3022EMSE-1.5#PBF | IC REG LDO 1.5V 1A 16MSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3014 | 制造商:LINER 制造商全称:Linear Technology 功能描述:20mA, 3V to 80V Low Dropout Micropower Linear Regulator |
| LT3014B | 制造商:LINER 制造商全称:Linear Technology 功能描述:20mA, 3V to 80V Low Dropout Micropower Linear Regulator |
| LT3014BEDD | 制造商:Linear Technology 功能描述:LDO Regulator Pos 1.22V to 60V 0.02A 8-Pin DFN EP |
| LT3014BEDD#PBF | 功能描述:IC REG LDO ADJ 20MA 8-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 产品培训模块:More Information on LDOs 标准包装:50 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.3V 输入电压:最高 15V 电压 - 压降（标准）:1.1V @ 800mA 稳压器数量:1 电流 - 输出:800mA 电流 - 限制（最小）:800mA 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-4，D²Pak（3 引线+接片），TO-263AA 供应商设备封装:D2PAK-3 包装:管件 |
| LT3014BEDD#PBF | 制造商:Linear Technology 功能描述:LDO ADJ 1.22V TO 60V 20mA DFN-8 制造商:Linear Technology 功能描述:LDO, ADJ, 1.22V TO 60V, 20mA, DFN-8 |
发布紧急采购，3分钟左右您将得到回复。