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參數(shù)資料
| 型號： | RE024 |
| 英文描述： | RE024 [Updated 2/03. 11 Pages] A dual mode Low Drop Out (LDO) voltage regulator macrocell with a fixed 2.8V output voltage. rated for loads of up to 160 mA and as low as 5 mA. A typical application is radio section supply in mobile terminals. |
| 中文描述： | RE024 [更新2月3日。 11頁]雙模式的低壓差（LDO）穩(wěn)壓器電壓2.8V的固定輸出電壓調(diào)節(jié)器宏單元。額定工作負(fù)荷高達(dá)160 mA和低至5毫安。一個典型的應(yīng)用是在無線移動終端的部分供應(yīng)。 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 159K |
| 代理商： | RE024 |
1
Features
Dual Mode Low Drop Out Voltage Regulator
2.8V Fixed Output Voltage
3V to 5.5V Supply Operation
160 mA Maximum Load Current in Full Power Mode
Maximum Current Consumption 61 μA in Full Power Mode and 12 μA in Low Power Mode
Power-down Mode Consumption Less Than 1 μA
More Than 70dB (Typical) PSRR at 1 KHz
70 μV
RMS
Output Noise
0.35 μm CMOS Technology
Typical Application: Baseband Memory Section Supply in Mobile Terminals
Description
RE024 is a dual mode Low Drop Out (LDO) voltage regulator macrocell with a fixed
2.8V output voltage, rated for loads up to 160 mA in full power mode and 5 mA in low
power mode. (Both modes can be selected by the LP2 signal.) It is designed to be
integrated with other analog cells, digital logic, microcontrollers, DSP cores and mem-
ory blocks into system-on-chip products.
The circuit consists of a PMOS pass device, an error amplifier and a feedback resis-
tive network, sized to achieve the required closed loop gain. These blocks make up
the regulating loop. An over-current and short circuit protection circuit has been
included to limit the output current delivered by the regulator, thus avoiding destruction
in case of a short circuit.
An external reference voltage V
BG
(bandgap voltage) is necessary for correct function-
ality. The target reference voltage is 1.231V delivered, for example, by BG019. Double
pads on the supply voltage V
BAT2C
/V
BAT2CC
and output voltage V
MEMA
/V
MEMAA
are used
to reduce the total output resistance. Current reference is generated inside the cell
through a circuit supplied by a 2.5V ± 0.1V of regulated input voltage on V
SAUVC
.
Remote sense terminal V
MEMS
provides regulation of the load by connecting it to the
output terminal near a critical point to improve performance of the regulator (e.g., con-
necting it to the package pin by double-bonding, thus avoiding the bonding resistance
influence). A ceramic capacitor of 2.2 μF connected from V
MEMA
/V
MEMAA
to ground is
needed as external compensation.
A low-leakage current switch has been added to charge a second external capacitor
(2.2 μF - 10 μF) to V
MEMA
/V
MEMAA
. This voltage, called V
BACKUP
, is used to guarantee
30 minutes of operation time for the internal system clock and calendar in backup
mode when the main battery is unplugged.
Figure 1.
Symbol
(1)
Note:
1. Pin names are written as they appear on the user screen when the symbol is
opened in the design tool environment.
V
SAUVC
V
BG
GND2
V
BAT2C
V
BAT2CC
V
MEMA
V
MEMAA
V
BACKUP
V
BACKUPC
ON2
LP2
BACKUPON
V
MEMC
V
MEMS
Embedded ASIC
Macrocell:
Power
Management for
Mobile
Terminals (PM)
RE024 2.8V
160 mA
Dual Mode LDO
Regulator
Rev. 2703B-PMGMT–02/03
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| RE027 | RE027 [Updated 2/03. 9 Pages] RE027 is a low drop out (LDO) voltage regulator macrocell with a fixed 2.8V output voltage. rated for loads up to 130 mA. A typical application is radio section supply in mobile terminals. |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RE025 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RE025 [Updated 2/03. 10 Pages] The RE025 is a Low Drop Out (LDO) voltage regulator macrocell with programmable 2.8V or 2.9V output voltages. rated for loads of up to 30 mA. A typical application is radio section supply in mobile terminals. |
| RE027 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RE027 [Updated 2/03. 9 Pages] RE027 is a low drop out (LDO) voltage regulator macrocell with a fixed 2.8V output voltage. rated for loads up to 130 mA. A typical application is radio section supply in mobile terminals. |
| RE028 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RE028 [Updated 3/03. 9 Pages] The RE028 is a Low Drop Out (LDO) voltage regulator macrocell with a fixed 4.5V output voltage. rated for loads up to 300 mA. It is designed to supply radio frequency synthesizers and used as a controller for the antenna switch. |
| RE029 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RE029 [Updated 3/03. 11 Pages] A dual mode Low Drop Out (LDO) voltage regulator macrocell with a fixed 1.8V output voltage. rated for loads of up to 80 mA and as low as 5 mA. A typical application is baseband memory in mobile terminals. |
| RE030 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RE030 [Updated 3/03. 12 Pages] RE030 is a dual mode Low Drop Out (LDO) voltage regulator macrocell with programmable output voltage ranging from 1.75V to 2.1V. rated for loads up to 180 mA in full power mode and 5 mA in low power mode. It is designed to be integrated with other analog cells. digital logic. microcontrollers. DSP cores and memory blocks into system-on-chip products. |
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