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參數資料
| 型號： | ISL9000IRPLZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual LDO with Low Noise, Very High PSRR, and Low IQ |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MO-229WEED-3, DFN-10 |
| 文件頁數： | 9/11頁 |
| 文件大?。?/td> | 302K |
| 代理商： | ISL9000IRPLZ-T |
9
FN9217.0
September 21, 2005
Block Diagram
Functional Description
The ISL9000 contains two high performance LDO’s. High
performance is achieved through a circuit that delivers fast
transient response to varying load conditions. In a quiescent
condition, the ISL9000 adjusts its biasing to achieve the
lowest standby current consumption.
The device also integrates current limit protection, smart
thermal shutdown protection, staged turn-on and soft-start.
Smart Thermal shutdown protects the device against
overheating. Staged turn-on and soft-start minimize start-up
input current surges without causing excessive device turn-
on time.
Power Control
The ISL9000 has two separate enable pins, EN1 and EN2,
to individually control power to each of the LDO outputs.
When both EN1 and EN2 are low, the device is in shutdown
mode. During this condition, all on-chip circuits are off, and
the device draws minimum current, typically less than 0.1
μ
A.
When one or both of the enable pins are asserted, the
device first polls the output of the UVLO detector to ensure
that VIN voltage is at least about 2.1V. Once verified, the
device initiates a start-up sequence. During the start-up
sequence, trim settings are first read and latched. Then,
sequentially, the bandgap, reference voltage and current
generation circuitry power up. Once the references are
stable, a fast-start circuit quickly charges the external
reference bypass capacitor (connected to the CBYP pin) to
the proper operating voltage. After the bypass capacitor has
been charged, the LDO’s power up in their specified
sequence.
Soft-start circuitry integrated into each LDO limits the initial
ramp-up rate to about 30
μ
s/V to minimize current surge.
VO2
LDO
ERROR
AMPLIFIER
IS1
1V
QEN1
LDO-1
LDO-2
POR
COMPARATOR
VOK1
POR1
VREF
TRIM
VIN
VO1
VO2
POR2
POR1
GND
EN2
EN1
CONTROL
LOGIC
POR2
DELAY
POR1
DELAY
VOLTAGE
REFERENCE
GENERATOR
BANDGAP AND
TEMPERATURE
SENSOR
UVLO
VOK2
VOK1
1.00V
0.94V
0.90V
I
I
Q
Q
VO1
VO2
1
1
CPOR
CBYP
VO1
~1.0V
VOK2
POR2
ISL9000
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL9000IRPPZ | 功能描述:IC REG LDO 1.85V .3A 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:2,000 系列:- 穩(wěn)壓器拓撲結構:正，可調式 輸出電壓:1.2 V ~ 5 V 輸入電壓:2.5 V ~ 7 V 電壓 - 壓降（標準）:0.24V @ 800mA 穩(wěn)壓器數量:1 電流 - 輸出:800mA 電流 - 限制（最小）:1.2A 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-261-5，TO-261AB 供應商設備封裝:SOT-223-5 包裝:帶卷 (TR) 其它名稱:*LP3964EMPX-ADJLP3964EMPX-ADJLP3964EMPX-ADJ-NDLP3964EMPX-ADJ/NOPBTR |
| ISL9000IRPPZ-T | 功能描述:IC REG LDO 1.85V .3A 10-DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:2,000 系列:- 穩(wěn)壓器拓撲結構:正，可調式 輸出電壓:1.2 V ~ 5 V 輸入電壓:2.5 V ~ 7 V 電壓 - 壓降（標準）:0.24V @ 800mA 穩(wěn)壓器數量:1 電流 - 輸出:800mA 電流 - 限制（最?。?1.2A 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:TO-261-5，TO-261AB 供應商設備封裝:SOT-223-5 包裝:帶卷 (TR) 其它名稱:*LP3964EMPX-ADJLP3964EMPX-ADJLP3964EMPX-ADJ-NDLP3964EMPX-ADJ/NOPBTR |
| ISL9000JBEV2 | 功能描述:EVAL BOARD 2.8V/1.5V ISL9000JB RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 線性穩(wěn)壓器 (LDO) 系列:- 產品變化通告:1Q2012 Discontinuation 30/Mar/2012 設計資源:NCP590MNDPTAGEVB Gerber Files 標準包裝:1 系列:- 每 IC 通道數:2 - 雙 輸出電壓:1.8V，2.8V 電流 - 輸出:300mA 輸入電壓:2.1 ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 已供物品:板 已用 IC / 零件:NCP590MNDP 其它名稱:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
| ISL9000JCEV2 | 功能描述:EVAL BOARD 2.8V/1.8V ISL9000JC RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 線性穩(wěn)壓器 (LDO) 系列:- 產品變化通告:1Q2012 Discontinuation 30/Mar/2012 設計資源:NCP590MNDPTAGEVB Gerber Files 標準包裝:1 系列:- 每 IC 通道數:2 - 雙 輸出電壓:1.8V，2.8V 電流 - 輸出:300mA 輸入電壓:2.1 ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 已供物品:板 已用 IC / 零件:NCP590MNDP 其它名稱:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
| ISL9000JMEV2 | 功能描述:EVAL BOARD 2.8V/3.0V ISL9000JM RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 線性穩(wěn)壓器 (LDO) 系列:- 產品變化通告:1Q2012 Discontinuation 30/Mar/2012 設計資源:NCP590MNDPTAGEVB Gerber Files 標準包裝:1 系列:- 每 IC 通道數:2 - 雙 輸出電壓:1.8V，2.8V 電流 - 輸出:300mA 輸入電壓:2.1 ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 已供物品:板 已用 IC / 零件:NCP590MNDP 其它名稱:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
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