參數(shù)資料
型號(hào)： MAX1606EUA
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： 28V Internal Switch LCD Bias Supply with True Shutdown
中文描述： 0.6 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO8
封裝： UMAX-8
文件頁(yè)數(shù)： 7/10頁(yè)
文件大?。?/td> 302K
代理商： MAX1606EUA
M
28V Internal Switch LCD Bias Supply
with True Shutdown
_______________________________________________________________________________________
7
Detailed Description
The MAX1606 step-up DC-DC converter operates from a
2.4V to 5.5V supply and converts voltages as low as
0.8V up to 28V. The device includes an internal switch-
ing MOSFET with a 0.8
on-resistance and selectable
current limit (Figure 1) and consumes 160μA of supply
current. During startup, the MAX1606 extends the mini-
mum off-time, limiting initial battery surge current. The
MAX1606 uses a P-channel MOSFET to isolate the out-
put from the input during true shutdown mode. This isola-
tion switch also includes short-circuit current limiting,
which protects the inductor and diode during a short-cir-
cuit fault.
Control Scheme
The MAX1606 features a minimum off-time, current-limit-
ed control scheme. The duty cycle is governed by a pair
of one-shots that set a minimum off-time and a maximum
on-time. The switching frequency can be up to 500kHz
and depends upon the load and input voltage. The peak
current limit of the internal N-channel MOSFET is pin
selectable and may be set at 125mA, 250mA, or 500mA
(Figure 2).
N
ON
OFF
SHDN
V
IN
= 0.8V TO 5.5V
BATT
V
CC
LIM
SHUTDOWN
LOGIC
1.25V
FB
LX
D1
R1
R2
SW
L1
10
μ
H
LOGIC
CONTROL
V
CC
= 2.4V TO 5.5V
C1
C2
V
OUT
= V
IN
TO 28V
C
OUT
C
FF
MAX1606
CURRENT
LIMIT
ERROR
AMPLIFIER
I
LIM
Figure 1. Functional Diagram
Figure 2. Setting the Peak Inductor Current Limit
GND
LIM
GND
V
CC
V
CC
LIM
GND
V
CC
LIM
NO CONNECTION
V
(2.4V TO 5.5V)
V
(2.4V TO 5.5V)
V
(2.4V TO 5.5V)
IPEAK = 500mA
IPEAK = 250mA
IPEAK = 125mA
MAX1606
MAX1606
MAX1606
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1606EUA.C71076 制造商:Maxim Integrated Products 功能描述:
MAX1606EUA+ 功能描述:LCD 驅(qū)動(dòng)器 28V Int Switch LCD Bias Supply 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
MAX1606EUA+T 功能描述:LCD 驅(qū)動(dòng)器 28V Int Switch LCD Bias Supply 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
MAX1606EUA-T 功能描述:LCD 驅(qū)動(dòng)器 28V Int Switch LCD Bias Supply 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
MAX1606EUA-TG069 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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