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參數(shù)資料
型號(hào): MAX1765EUE+
廠商: Maxim Integrated
文件頁(yè)數(shù): 11/19頁(yè)
文件大小: 867K
描述: IC REG DL BST/LINEAR 16TSSOP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 96
拓?fù)洌?/td> 升壓(升壓)同步(1),線性(LDO)(1)
功能: 任何功能
輸出數(shù): 2
頻率 - 開關(guān): 1MHz
電壓/電流 - 輸出 1: 2.5 V ~ 5.5 V,800mA
電壓/電流 - 輸出 2: 2.85V/可調(diào),500mA
帶 LED 驅(qū)動(dòng)器:
帶監(jiān)控器:
帶序列發(fā)生器:
電源電壓: 0.7 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm)裸露焊盤
供應(yīng)商設(shè)備封裝: 16-TSSOP-EP
包裝: 管件
Light-Load Operation in Normal Mode
At light loads, the MAX1765 operates by turning on the
DC-DC converters N-channel field-effect transistor
(FET) when V
FB
< V
REF
, synchronized with the rising
edge of the oscillator. The N-channel FET will remain
on, ramping up the inductor current past the minimum
inductor current, until the internal error amplifier and
current mode circuitry determine that the needs of the
system have been met or the device hits the ISET cur-
rent limit. The N-channel is then turned off and the P-
channel is turned on until current decays to the
P-channel turn-off current level. The N-channel will
remain off until V
FB
is again less than V
REF
, and a rising
edge of the oscillator occurs.
800mA, Low-Noise, Step-Up DC-DC Converter
with 500mA Linear Regulator
______________________________________________________________________________________ 11
2.15V
ON
OUTL
POUT
LX
PGND
REF
SHUTDOWN
LOGIC
THERMAL
SENSOR
MAX1765
ERROR
AMP
STARTUP
OSCILLATOR
EN
Q
P
P
N
MOSFET DRIVER
WITH CURRENT
LIMITING
EN
1MHz
OSCILLATOR
EN
D
OSC
MODE
SKIP/PWM
Q
Q
IFB
PWM
CONTROLLER
RDY
1.250V
REFERENCE
IC PWR
IREF
ICS
FBL
OUT
V
OUT
ONL
INL
ONB
GND
ONA
V
OUT
 - 300mV
ISET
ONL
REF
CLK/SEL
FB
TRACK
TRACK
ISET
Figure 1. Functional Diagram
Table 1. Selecting the Operating Mode
CLK/SEL
MODE
FEATURES
0
Normal
Operation
High-efficiency pulse
skipping at light loads,
PWM at medium and
heavy loads
1
Forced PWM
Low noise, fixed
frequency at all loads
E xter nal C l
ock
500kH z to
1.2M H z
Synchronized
PWM
Low noise, fixed
frequency at all loads
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1765EUE+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EUE+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EUE-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EVKIT 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Evaluation Kit for the MAX1765 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX176ACPA 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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