参数资料
| 型号： | LT3024IDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A/.1A 12-DFN |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 91 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.22 V ~ 20 V |
| 输入电压： | 1.8 V ~ 20 V |
| 电压 - 压降（标准）： | 0.3V @ 500mA，0.3V @ 100mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 500mA，100mA |
| 电流 - 限制（最小）： | 520mA，110mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN（4x3） |
| 包装： | 管件 |
LT3024
APPLICATIONS INFORMATION
within 1% for the same load step. Both outputs exhibit this
improvement in transient response (see Transient Reponse
in Typical Performance Characteristics section). However,
regulator start-up time is proportional to the size of the
bypass capacitor, slowing to 15ms with a 0.01μF bypass
capacitor and 10μF output capacitor.
Output Capacitance and Transient Response
The LT3024 regulator is designed to be stable with a wide
range of output capacitors. The ESR of the output capaci-
tor affects stability, most notably with small capacitors. A
minimum output capacitor of 1μF with an ESR of 3Ω or
less is recommended for Output 2 to prevent oscillations.
A minimum output capacitor of 3.3μF with an ESR of 3Ω
or less is recommended for Output 1. The LT3024 is a
micropower device and output transient response will be
a function of output capacitance. Larger values of output
capacitance decrease the peak deviations and provide im-
proved transient response for larger load current changes.
Bypass capacitors, used to decouple individual components
powered by the LT3024, will increase the effective output
capacitor value. With larger capacitors used to bypass the
reference (for low noise operation), larger values of output
capacitors are needed. For 100pF of bypass capacitance on
Output 2, 2.2μF of output capacitor is recommended. With
a 330pF bypass capacitor or larger on this output, a 3.3μF
output capacitor is recommended. For Output 1, 4.7μF of
output capacitor is recommended for 100pF of bypass
capacitance. With 1000pF or larger bypass capacitor on
this output, a 6.8μF output capacitor is recommended. The
4.0
3.5
3.0
STABLE REGION
2.5
2.0
shaded region of Figures 2 and 3 de?ne the regions over
which the LT3024 regulator is stable. The minimum ESR
needed is de?ned by the amount of bypass capacitance
used, while the maximum ESR is 3Ω.
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 char-
acteristic 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 4 and 5.
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 tempera-
ture 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 avail-
able 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. Capaci-
tor DC bias characteristics tend to improve as component
case size increases, but expected capacitance at operating
voltage should be veri?ed.
4.0
3.5
3.0
STABLE REGION
2.5
2.0
1.5
1.0
0.5
0
C BYP = 0
C BYP = 100pF
C BYP = 330pF
C BYP > 3300pF
1.5
1.0
0.5
0
C BYP = 0
C BYP = 100pF
C BYP = 330pF
C BYP ≥ 1000pF
1
2
3
4 5 6 7 8 9 10
1
2
3
4 5 6 7 8 9 10
OUTPUT CAPACITANCE (μF)
3024 F02
Figure 2. Output 2 Stability
OUTPUT CAPACITANCE (μF)
Figure 3. Output 1 Stability
3024 F03
3024fa
14
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6324ACRZ-T | IC HYBRID CTRLR PWM DUAL 48QFN |
| LT3028EDHC#PBF | IC REG LDO ADJ .5A/.1A 16-DFN |
| ISL8101IRZ-T | IC PWM CTRLR BUCK 2PHASE 24-QFN |
| MIC39501-2.5WU | IC REG LDO 2.5V 5A TO-263-5 |
| ISL6324CRZ-T | IC HYBRID CTRLR PWM DUAL 48-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3024IDE-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IFE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 100mA/500mA Low Dropout, Low Noise,Micropower Regulator |
| LT3024IFE#PBF | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
| LT3024IFE#TRPBF | 功能描述:IC REG LDO ADJ .5A/.1A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
发布紧急采购，3分钟左右您将得到回复。