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參數(shù)資料
| 型號： | MAX783CBX |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Modular Connector; No. of Contacts:8; No. of Ports:1; LAN Category:5; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):No RoHS Compliant: Yes |
| 中文描述： | DUAL SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO36 |
| 封裝： | PLASTIC, SSOP-36 |
| 文件頁數(shù)： | 7/28頁 |
| 文件大?。?/td> | 279K |
| 代理商： | MAX783CBX |
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M
Triple-Output Power-S upply Controller
for Notebook Computers
_______________________________________________________________________________________
7
NAME
FUNCTION
1
ON3
S———N
ON/O——control input to disable the +3.3V PWM. Tie directly to VL for automatic start-up.
Shutdown control input, low-true logic. Tie to VL for automatic start-up. The 5V VL supply stays active in
#1 level-translator/comparator noninverting input, threshold = +1.650V. Controls Q1. Tie to GND if
unused.
2
PIN
______________________________________________________________Pin Desc ription
3
D1
4
5
D2
VH
#2 level-translator/comparator noninverting input (see D1).
External positive supply voltage input for the level translators/comparators and R———output.
#2 level-translator/comparator output. Sources 20μA from VH when D2 is high. Sinks 500μA to GND when
D2 is low, even with VH = 0V.
8
R———
7
Q1
#1 level translator/comparator output (see Q2).
Power-good indication for the main +5V supply. Low indicates greater than 4.5V at the +5V output.
Swings 0V to VH.
6
Q2
19
20
21
22
23
24
25
26
27
28
ON5
SS5
CS5
DH5
LX5
BST5
DL5
PGND
FB5
VL
ON/O——control input to disable the +5V PWM supply. Tie to VL for automatic start-up.
Soft-start control input for +5V. Ramp time to full current limit is 1ms/nF of capacitance to GND.
Current-sense input for +5V. Current limit level is +100mV referred to FB5.
Gate-drive output for the +5V high-side MOSFET.
Inductor connection for the +5V supply.
Boost capacitor connection for the +5V supply (0.1μF).
Gate-drive output for the +5V low-side MOSFET.
Power ground
Feedback and current-sense input for the +5V PWM.
5V logic supply voltage for internal circuitry. VL is always on and can source 5mA for external loads.
PCMCIA digital control inputs with industry-standard coding (see Table 1).
14
SYNC
13
REF
12
GND
Low-current analog ground. Feedback reference point for all outputs.
3.3V reference output sources up to 5mA for external loads. Bypass to GND with 1μF/mA of load or
0.22μF minimum
Oscillator control/synchronization input. Connect to VL or GND for 200kHz; connect to REF for 300kHz.
For external clock synchronization in the 240kHz to 350kHz range, a high-to-low transition starts a new cycle.
11
VPPB
0V, 3.3V, 5V, 12V switchable PCMCIA VPP output. Sources 60mA. Controlled by DB0 and DB1.
10
VDD
9
VPPA
0V, 3.3V, 5V, 12V switchable PCMCIA VPP output. Sources 60mA. Controlled by DA0 and DA1.
+15V flyback input (feedback). A weak shunt regulator conducts 3mA to GND when VDD exceeds 19V.
VDD serves as the supply input for the VPP linear regulators.
15-18
29
30
V+
DL3
Supply voltage input from battery, 5.5V to 30V
Gate-drive output for the +3.3V low-side MOSFET.
33
34
DH3
FB3
Gate-drive output for the +3.3V high-side MOSFET.
Feedback and current-sense input for the +3.3V PWM.
32
LX3
Inductor connection for the +3.3V supply.
31
BST3
Boost capacitor connection for the +3.3V supply (0.1μF).
36
SS3
Soft-start input for +3.3V. Ramp time to full current limit is 1ms/nF of capacitance to GND.
35
CS3
Current-sense input for +3.3V, current limit level is +100mV referred to FB3.
DA1, DA0,
DB1, DB0
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX783CBX-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(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX783EBX | 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(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX783EBX+ | 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(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX783EBX+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(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| MAX783EBX-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(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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