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參數資料
| 型號： | MAX1858EEG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Dual 180∑ Out-of-Phase PWM Step-Down Controller with Power Sequencing and POR |
| 中文描述： | DUAL SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | 0.150 INCH, QSOP-24 |
| 文件頁數： | 11/22頁 |
| 文件大?。?/td> | 553K |
| 代理商： | MAX1858EEG |
M
Dual 180° Out-of-Phase Buck Controllers with
Sequencing/Prebias Startup and POR
______________________________________________________________________________________
11
VOUT1
SS1
VOUT2
SS2
DH1
DL1
DH2
DL2
UVLO
A
B
C
D
E
F
G
H
I
J
K
M
L
EN
V
L
P
O
N
MAX1858A POWER-ON-OFF SEQUENCING DEFINITIONS
SYMBOL
DEFINITION
V
L
EN
VOUT1
SS1
VOUT2
SS2
DH1
DL1
DH2
DL2
A
B
Internal 5V Linear-Regulator Output
Active-High Enable Input
Regulator 1 Output Voltage
Regulator 1: Internal Soft-Start Input Signal into Error Amplifier
Regulator 2 Output Voltage
Regulator 2: Internal Soft-Start Input Signal into Error Amplifier
Regulator 1: High-Side Gate-Driver Output
Regulator 1: Low-Side Gate-Driver Output
Regulator 2: High-Side Gate-Driver Output
Regulator 2: Low-Side Gate-Driver Output
V
L
rising while below the UVLO threshold. EN is low.
V
L
is greater than the UVLO threshold. EN is low.
EN is pulled high. DH1 and DL1 start switching. DH2 and
DL2 are off.
SYMBOL
D
E
F
DEFINITION
Normal operation
V
L
enters UVLO.
V
L
exits UVLO.
Resumes normal operation. DH1 and DL1 start switching.
DH2 and DL2 are off.
EN is pulled low and then high.
VOUT1 must reach 0V before restarting due to the cycling
of the enable in region H (above).
VOUT1 recovers.
VOUT2 recovers.
V
L
enters UVLO before VOUT2 fully recovers.
V
L
exits UVLO.
UVLO latches DL_ low.
Exiting UVLO: DL_ remains latched low until the first fall
of DH_ is detected.
DL_ is high after EN is pulled low and soft-stop is complete.
UVLO
Undervoltage threshold value is provided in the
Electrical Characteristics
table.
C
H
G
J
K
L
M
N
O
P
I
Figure 4. MAX1858A Detailed Power-On-Off Sequencing
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| MAX1858AEEG | Dual 180∑ Out-of-Phase Buck Controllers with Sequencing/Prebias Startup and POR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1858EEG+ | 功能描述:電壓模式 PWM 控制器 Dual 180 Out Buck Controllers RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1858EEG+T | 功能描述:電壓模式 PWM 控制器 Dual 180 Out Buck Controllers RoHS:否 制造商:Texas Instruments 輸出端數量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1858EEG-T | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX1858EVKIT | 功能描述:DC/DC 開關控制器 Evaluation Kit for the MAX1858 MAX1875 MAX1876 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX185ACNG | 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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