參數(shù)資料
型號(hào): MAX1880
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: Quad-Output TFT LCD DC-DC Converters with Buffer
中文描述: 四路輸出、TFT LCD DC-DC轉(zhuǎn)換器,帶有緩沖器
文件頁(yè)數(shù): 16/38頁(yè)
文件大?。?/td> 1051K
代理商: MAX1880
M
Quad-Output TFT LCD DC-DC
Converters with Buffer
16
______________________________________________________________________________________
MAX1778 toc48
B
A
4.00V
3.50V
4.50V
4.00V
3.50V
4.50V
10
μ
s/div
VCOM BUFFER
LARGE-SIGNAL RESPONSE
A. V
+
= 3.50V TO 4.50V, 0.5V/div
B. BUFOUT = BUF-, 0.5V/div
C
BUF
= 1
μ
F, V
SUPB
= 8V
C
B
A
3.8V
8.0V
200mA
4.2V
0
-200mA
4.0V
4
μ
s/div
VCOM BUFFER
LOAD-TRANSIENT RESPONSE
A. I
= 200mA PULSES, 200mA/div
B. BUFOUT = BUF-, 200mV/div
C. V
MAIN
= 8V, 50mV/div
V
SUPB
= V
MAIN
, BUF+ = GND, C
BUF
= 1
μ
F
C
B
A
3.5V
8.0V
500mA
4.5V
0
-500mA
4.0V
4
μ
s/div
VCOM BUFFER
LOAD-TRANSIENT RESPONSE
A. I
= 400mA PULSES, 500mA/div
B. BUFOUT = BUF-, 0.5V/div
C. V
MAIN
= 8V, 100mV/div
V
SUPB
= V
MAIN
, BUF+ = GND, C
BUF
= 1
μ
F
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.)
MAX1778 toc51
C
B
A
8.1V
7.8V
2V
4V
2V
0
4V
0
100
μ
s/div
VCOM BUFFER STARTUP
A. RDY, 2V/div
B. BUFOUT = BUF-, C
BUF
= 1
μ
F, 2V/div
C. V
SUPB
= V
MAIN
= 8V, I
MAIN
= 20mA, 200mV/div
BUF+ = GND
MAX1778 toc51
C
B
A
8.1V
7.8V
2V
4V
2V
0
4V
0
100
μ
s/div
VCOM BUFFER STARTUP
A. RDY, 2V/div
B. BUFOUT = BUF-, C
BUF
= 1
μ
F, 2V/div
C. V
SUPB
= V
MAIN
= 8V, I
MAIN
= 20mA, 200mV/div
BUF+ = GND
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