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| 型號(hào)： | MAX1885EUP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | Fixed-Point Digital Signal Processor 256-BGA |
| 中文描述： | 2.05 A SWITCHING REGULATOR, 625 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 4.40 MM, 1.10 MM HEIGHT, MO-153AC, TSSOP-20 |
| 文件頁(yè)數(shù)： | 11/38頁(yè) |
| 文件大小： | 1051K |
| 代理商： | MAX1885EUP |
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M
Quad-Output TFT LCD DC-DC
Converters with Buffer
______________________________________________________________________________________
11
RIPPLE VOLTAGE WAVEFORMS
8V
-5V
20V
1
μ
s/div
A. V
MAIN
= 8V, I
MAIN
= 200mA, 10mV/div
B. V
NEG
= -5V, I
NEG
= 10mA, 20mV/div
C. V
POS
= 20V, I
POS
= 5mA, 20mV/div
C
B
A
STEP-UP CONVERTER
SOFT-START (LIGHT LOAD)
MAX1778 toc17
0
6V
0.5A
1ms/div
A. V
SHDN
= O TO 2V, 2V/div
B. V
= 8V, 2V/div
C. INDUCTOR CURRENT, 500mA/div
R
LOAD
= 400
C
B
A
2V
8V
4V
0
STEP-UP CONVERTER
SOFT-START (HEAVY LOAD)
MAX1778 toc18
0
6V
1.0A
1ms/div
A. V
SHDN
= O TO 2V, 2V/div
B. V
MAIN
= 8V, 2V/div
C. INDUCTOR CURRENT, 500mA/div
R
LOAD
= 20
C
B
A
2V
8V
4V
0.5A
0
POWER-UP SEQUENCE
MAX1778 toc19
0
0
10V
2ms/div
A. V
= O TO 2V, 2V/div
B. RDY, 5V/div
C. POSITIVE CHARGE PUMP = V
POS
= 20V, R
LOAD
= 4k
, 10V/div
D. STEP-UP CONVERTER: V
MAIN
= 8V, R
LOAD
= 40
, 10V/div
E. NEGATIVE CHARGE PUMP: V
NEG
= -5V, R
LOAD
= 500
, 10V/div
E
B
A
2V
5V
20V
0
-10V
C
D
POWER-UP SEQUENCE
(CIRCUIT OF FIG.10)
MAX1778 toc20
0
10V
0
1ms/div
A. RDY, 2V/div
B. POSITIVE CHARGE PUMP, V
POS(SYS)
= 20V, 10V/div
C. STEP-UP CONVERTER: V
MAIN(SYS)
= 8V, 10V/div
D. NEGATIVE CHARGE PUMP, V
NEG
= -5V, -5V/div
B
A
2V
20V
0
-5V
C
D
4V
MAX1778 toc21
C
B
A
10V
5V
4V
5V
2V
0
0
0
100
μ
s/div
POWER-UP INTO SHORT-CIRCUIT
(CIRCUIT OF FIG. 10)
A. RDY, 2V/div
B. GATE OF N-CH MOSFET, 5V/div
C. STEP-UP CONVERTER, V
MAIN(START)
= 8V, 5V/div
V
MAIN(SYS)
= GND
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= +3.3V,
SHDN
= IN, V
MAIN
= V
SUPP
= V
SUPN
= V
SUPB
= V
SUPL
= 8V, BUF- = BUFOUT,
BUF+ = FLTSET = TGND = PGND = GND, T
A
= +25
°
C.)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1885EUP-T | 功能描述:LCD 驅(qū)動(dòng)器 Quad-Output TFT LCD DC-DC Converter with Buffer RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube |
| MAX1886ESA+ | 制造商:Maxim Integrated Products 功能描述:HIGH-CURRENT VCOM DRIVE BUFFER - Rail/Tube |
| MAX1886EUK | 制造商:Maxim Integrated Products 功能描述:HIGH-CURRENT VCOM DRIVE BUFFER - Rail/Tube |
| MAX1886EUK+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX1886EUK-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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