- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374304 > KA3505 (FAIRCHILD SEMICONDUCTOR CORP) PC SMPS Supervisory IC PDF資料下載
參數(shù)資料
| 型號： | KA3505 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | PC SMPS Supervisory IC |
| 中文描述： | 3-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP16 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 324K |
| 代理商： | KA3505 |
KA3505
4
Pin Definitions
Pin No.
Name
Pin Function Description
1
V33
Over and Under Voltage Protection Input for the 3.3V. It directly senses the 3.3V
rail without any external divider.
2
V5
Over and Under Voltage Protection Input for the 5V. It directly senses the 5V rail
without any external divider.
3
V12
Over and Under Voltage Protection Input for the 12V. It directly senses the 12V
rail without any external divider.
4
PGI
Power Good Signal Generator Input. It should be supplied from a bulk
dependent voltage in order to detect power on and off state.
5
V
CC
Supply voltage. Its recommended operating voltage is ranged from 15V to 30V.
6
FPO
Fault Protection Output (Open Collector Output). This pin indicates the fault
condition. When fault state occurs, the PGO signal goes Low.
Normal = ’Low", Fault = "High".
7
PSON
Remote on/off input. It does TTL operation and its threshold voltage is 1.4V. In
case of open circuit, the voltage at this pin is High (5.0V). If PSON = "Low", then
FPO = "Low". It means the main SMPS is working. When PSON = "High or
Open", then FPO = "High" and the main SMPS stops to work.
8
T
PSON
Timing pin for PSON delay. Ton/Toff=8ms/24ms (Typ.) with Cpson=0.1
μ
F
externally. PSON On Delay Time (Ton) is measured as PSON input goes Low to
High. PSON Off Delay Time (Toff) can be measured reversely.
9
PGO
Power Good Output Signal (Open Collector).
PGO = "High" means "Power Good" for operation and PGO = "Low" means
"Power Fail".
10
T
PG
Timing pin for PGO delay. TPG = 270ms (Typ.) with CPG = 2.2
μ
F externally. The
high/low threshold voltages are 1.8V/0.6V and the voltage of pin10 would be
charged up to 2.9V for noise margin.
11
RI
OCP current sense setting pin. The reference voltage at this pin is set to 1.25V
internally.You can fix the OCP reference current by using RI resistor.
12
GND
Ground
13
T
Timing pin for under voltage protection and over current protection blank-out
time. Its threshold voltage is 1.8V and clamped at 2.9V after full charging. Target
of delay time is 38ms and it is realized through external capacitor (C=0.47
μ
F).
14
IS12
Current sense input for +12V. This pin is connected to the current sensing
resistor or inductor. You can define OCP offset voltage for +12V by using RI
resistor externally. If you connected RI resistor of 62k
at Pin11 to ground, the
reference current(Iref) should be 20
μ
A. After that, you can make a constant OCP
offset voltage (V
OFFSET
= R
O
×
5
×
Iref).
In case the voltage drop (=I
O
.
12
×
R
S
) of the sense resistor or inductor is larger
than offset voltage, FPO becomes "High" after some delay time and the main
SMPS is turned-off. So the over current level is determined by following
equation. (I
O.12
= V
OFFSET
/ R
S
)
See application note for details.
15
IS5
Current sense input for +5V. You can make the +5V OCP function as previous
method in IS12 (Pin14).
16
IS33
Current sense input for +3.3V. You can also make the +3.3V OCP function as
previous method in IS12 (Pin14).
相關PDF資料 |
PDF描述 |
|---|---|
| KA350 | 3-Terminal 3A Positive Adjustable Voltage Regulator |
| KA3511 | PC POWER SUPPLY DESIGN WITH KA3511 |
| KA3524 | SMPS Controller |
| KA3525A | SMPS CONTROLLER |
| KA3525AD | SMPS CONTROLLER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| KA350TU | 功能描述:線性穩(wěn)壓器 - 標準 3a Pos Voltage Reg 3Term adjustable RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節(jié): 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| KA3511 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:PC POWER SUPPLY DESIGN WITH KA3511 |
| KA3511BS | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Intelligent Voltage Mode PWM IC |
| KA3511DS | 功能描述:電壓模式 PWM 控制器 PWM/ Secondary Combo IC RoHS:否 制造商:Texas Instruments 輸出端數(shù)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 |
| KA3524 | 功能描述:DC/DC 開關控制器 SMPS Controller 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。