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参数资料
| 型号： | ADP5024ACPZ-1-R7 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PQCC24 |
| 封装： | 4 X 4 MM, ROHS COMPLIANT, MO-220, LCC-24 |
| 文件页数： | 13/27页 |
| 文件大小： | 926K |
| 代理商： | ADP5024ACPZ-1-R7 |
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ADP5024
Preliminary Technical Data
Rev. PrA | Page 20 of 27
pFET switch on 100% of the time, the output voltage drops
below the desired output voltage. At this limit, the buck
transitions to a mode where the pFET switch stays on 100%
of the time. When the input conditions change again and the
required duty cycle
falls, the buck immediately restarts PWM regulation without
allowing overshoot on the output voltage.
Active Pull-Downs
All regulators have optional, factory programmable, active
pull-down resistors discharging the respective output
capacitors when the regulators are disabled. The pull-down
resistors are connected between VOUTx and AGND. Active
pull-downs are disabled when the regulators are turned on.
The typical value of the pull-down resistor is 600 Ω for the
LDO and 75 Ω for the bucks. Figure 46 shows the activation
timings for the active pull-downs during regulator activation
and deactivation.
LDO
The ADP5024 contains one LDO with low quiescent current
and low dropout linear regulator, and provides up to 300 mA
of output current. Drawing a low 10 μA quiescent current
(typical) at no load makes the LDO ideal for battery-operated
portable equipment.
The LDO operates with an input voltage of 1.7 V to 5.5 V. The
wide operating range makes these LDO suitable for cascading
configurations where the LDO supply voltage is provided
from one of the buck regulators.
TheLDO output voltage is set through external resistor
dividers as shown in Figure 48 for LDO. The output voltage
can optionally be factory programmed to default values as
indicated in the Ordering Guide section. In this event, Ra and
Rb are not needed, and FB3 can be left unconnected. FB3 is
0.5 V.
LDO1
FB3
Ra
Rb
VOUT3
VIN3
C7
1 F
VOUT3 = VFB3
+ 1
Ra
Rb
0
9
7
0
3
-0
0
9
Figure 48. LDO1 External Output Voltage Setting
The LDO also provide high power supply rejection ratio
(PSRR), low output noise, and excellent line and load
transient response with only a small 1 F ceramic input and
output capacitor.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP5024ACPZ-2-R7 | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ADP5024ACPZ-R2 | 功能描述:直流/直流开关调节器 ADJ Outputs UVLO Low RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ADP5024ACPZ-R7 | 功能描述:直流/直流开关调节器 ADJ Outputs UVLO Low RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ADP5024CP-EVALZ | 功能描述:BOARD EVAL FOR ADP5024 LFCSP RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ADP50250001CBZR | 功能描述:IC RF REGULATOR LDO 制造商:analog devices inc. 系列:* 零件状态:上次购买时间 标准包装:1 |
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