參數(shù)資料
型號: MAX5069DAUE
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers
中文描述: 1 A SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO16
封裝: 4.40 MM, MO-153-ABT, TSSOP-16
文件頁數(shù): 10/19頁
文件大?。?/td> 236K
代理商: MAX5069DAUE
M
Undervoltage Loc kout
The MAX5069 features an input voltage UVLO/EN func-
tion to enable the PWM controller before any operation
can begin. The MAX5069A/D shut down if the voltage
at UVLO/EN falls below its 1.18V threshold. The
MAX5069B/C also incorporate a UVLO hysteresis input
to set the desired turn-off voltage.
MAX5069A/D UVLO Adjustment
The MAX5069A/D have an input voltage UVLO/EN with
a 1.231V threshold. Before any operation can com-
mence, the UVLO/EN voltage must exceed the 1.231V
threshold. The UVLO circuit keeps the PWM compara-
tor, ILIM comparator, oscillator, and output drivers shut-
down to reduce current consumption (see the
Functional Diagram)
.
Calculate R6 in
Figure
2 by using the following formula:
where V
ULR2
is the UVLO/EN’s 1.231V rising threshold
and V
ON
is the desired startup voltage. Choose an R7
value in the 20k
range.
After a successful startup, the MAX5069A/D shut down
if the voltage at UVLO/EN drops below its 1.18V fall-
ing threshold.
MAX5069B/C UVLO with
Programmable Hysteresis
In addition to programmable undervoltage lockout dur-
ing startup, the MAX5069B/C incorporate a UVLO/EN
R
V
V
R
ON
ULR
6
1
7
2
×
=
High-Frequenc y, Current-Mode PWM Controller
with Ac c urate Osc illator and Dual FET Drivers
10
______________________________________________________________________________________
MAX5069B
IN
NDRVA
NDRVB
HYST
UVLO/EN
CS
COMP
V
CC
AGND PGND
REG5
RT
FB
DT
FLTINT
R1
C1
Q1
Q2
V
IN
C2
C3
C4
R3
R4
R9
R2
R8
V
OUT
SCOMP
C5
C7
D1
D3
D2
R5
C6
R10
R6
R
HYST
R7
Figure
1. Nonisolated Power Supply with Programmable Input Supply Voltage
相關PDF資料
PDF描述
MAX5069CAUE High-Frequency, Current-Mode PWM Controller with Accurate Oscillator and Dual FET Drivers
MAX5069A MAX5069A Evaluation Kit
MAX5069AEVKIT MAX5069A Evaluation Kit
MAX5075 Push-Pull FET Driver with Integrated Oscillator and Clock Output
MAX5075A Push-Pull FET Driver with Integrated Oscillator and Clock Output
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參數(shù)描述
MAX5069DAUE+ 功能描述:電流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5069DAUE+T 功能描述:電流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5069DAUE-T 功能描述:電流型 PWM 控制器 High-Frequency Current-Mode PWM RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX5069EVKIT 功能描述:電源管理IC開發(fā)工具 MAX5069 Eval Kit RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MAX506ACPP 功能描述:數(shù)模轉(zhuǎn)換器- DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube