- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385522 > MAX1804EUB (MAXIM INTEGRATED PRODUCTS INC) External Four-Input Feedback Integrator for Power Supplies PDF資料下載
參數(shù)資料
| 型號： | MAX1804EUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | External Four-Input Feedback Integrator for Power Supplies |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
| 封裝： | MICRO MAX PACKAGE-10 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大小： | 570K |
| 代理商： | MAX1804EUB |
M
External Four-Input Feedback Integrator for
Power Supplies
_______________________________________________________________________________________
7
The MAX1804 only sinks current at OUT (Figure 4). The
maximum sink current and maximum regulator voltage
increase are limited by the minimum guaranteed OUT
current of 10μA. The maximum regulator output voltage
increase can be further limited by including a resistor
between OUT and the feedback point of the regulator.
If any of the IN_ inputs fall to 90% of the regulation set
point, they are automatically disabled and OUT contin-
ues to regulate according to the lowest remaining
active input. See
Automatic Input Disable
.
Adjusting the Regulation Set Point
The MAX1804 monitors the voltage at the IN1
–
IN4
sense inputs and regulates the lowest active input to
four times the reference voltage at ADJ. The IN1
–
IN4
regulation set point is calculated as:
V
IN_
= 4
V
ADJ
The total error in the MAX1804 regulation set point is:
total percentage error = [(IN_scale factor x V
ADJ
+
IN_offset) / (4 x V
ADJ
)] x 100%
The maximum IN_ voltage is 5.5V. Use the MAX1804 for
higher output voltages by using an external divider to
divide down the desired output voltage at the IN1
–
IN4
pins. Since the IN_ input bias current is fairly high (1.5μA
typ), choose the resistive divider accordingly.
Automatic Input Disable
The MAX1804 has an input buffer stage that monitors
the sense inputs (IN1
–
IN4) and connects the lowest to
its internal integrator (Figure 4). Each input is com-
pared to 90% of the set point. If the input falls below
this value, the input buffer is disabled and the output
voltage is adjusted according to the lowest of the
remaining active inputs (see Automatic Input Disable in
Typical Operating Characteristics
). If all four sense
4.5V TO 28V
VIN
VOUT
SHDN
SYNC
REF
3
10
16
1
2
3
14
11
15
13
12
8
9
7
DH
BST
VL
LX
DL
PGND
CSH
CSL
FB
6
6
4
3
1
5
8
2
7
2
5
3
4
1
V+
SHDN
N1B
IRF7303
D1
CMPSH-3
C4
0.1
μ
F
N1A
IRF7303
D2
MBR0530
SKIP
SYNC
REF
GND
1M
SS
JU3
2
JU4
EXT
REF
COMP
ADJ
IN2
IN3
IN4
IN1
OUT
V+
SHDN
VL
C6
0.01
μ
F
0.01
μ
F
C5
0.33
μ
F
100k
100k
JU2
JU1
2
3
VL
VL
2
3
1
C2
0.1
μ
F
C1
22
μ
F
35V
C7
220
μ
F
10V
R
TOP
91k
1%
5V± 5%
PFET
I
LOAD
R
BOTTOM
100k
1%
562k
C3
4.7
μ
F
16V
L1
15
μ
H
R1
0.033
1%
U1
MAX1653
MAX1804
Figure 2. Application Circuit with Step-Down Regulator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1809 | 3A, 1MHz, DDR Memory Termination Supply |
| MAX1809EEE | 3A, 1MHz, DDR Memory Termination Supply |
| MAX1809ETI | 3A, 1MHz, DDR Memory Termination Supply |
| MAX181 | Completed ,8 Channel 12 Bits Data Acquisition System(100ksps,8通道，并行，12位A/D轉(zhuǎn)換器) |
| MAX1852 | SC70 Inverting Charge Pumps with Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1804EUB+ | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Feedback Integrator for Power Supply RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1804EUB+T | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Feedback Integrator for Power Supply RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1804EUB-T | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX1805EEE | 制造商:Maxim Integrated Products 功能描述: |
| MAX1805MEE | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。