參數(shù)資料
型號： MAX668
廠商： Maxim Integrated Products, Inc.
英文描述： Quadruple 2-Line To 1-Line Data Selector/Multiplexer With 3-State Outputs 20-LCCC -55 to 125
中文描述： 1.8V至28V輸入、PWM升壓型控制器，µMAX封裝
文件頁數(shù)： 2/18頁
文件大?。?/td> 326K
代理商： MAX668
M
1.8V to 28V Input, PWM Step-Up
Controllers in μMAX
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND ..........................................................-0.3V to +30V
PGND to GND....................................................................±0.3V
SYNC/
SHDN
to GND.............................................-0.3V to +30V
EXT, REF to GND.....................................-0.3V to (V
LDO
+ 0.3V)
LDO, FREQ, FB, CS+ to GND................................ -0.3V to +6V
LDO Output Current...........................................-1mA to +20mA
REF Output Current..............................................-1mA to +1mA
LDO Short Circuit to GND .........................................Momentary
REF Short Circuit to GND..........................................Continuous
ELECTRICAL CHARACTERISTICS
(V
CC
= LDO = +5V, R
OSC
= 200k
, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
Continuous Power Dissipation (T
A
= +70°C)
10-Pin μMAX (derate 5.6mW/°C above +70°C)..........444mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering,10sec)..............................+300°C
85
100
115
425
500
575
225
250
275
R
OSC
= 200k
±1%
R
OSC
= 100k
±1%
Oscillator Frequency
Oscillator
OSCILLATOR
1.0
1.1
1.2
Rising edge, 1% hysteresis
REF Undervoltage Lockout Threshold
-2
-10
REF load = 0 to 50μA
REF Load Regulation
1.225
1.250
1.275
No load, C
REF
= 0.22μF
REF Output Voltage
2.40
2.50
2.60
Sensed at LDO, falling edge,
hysteresis = 1%, MAX668 only
Undervoltage Lockout Threshold
2.65
5.50
3V
≤
V
CC
≤
28V
(includes LDO dropout)
4.50
5.00
5.50
LDO Output Voltage
Reference and LDO Regulators
REFERENCE AND LDO REGULATORS
3
28
28
MAX668
MAX669
PWM CONTROLLER
Input Voltage Range, V
CC
3.5
6
SYNC/
SHDN
= GND, V
CC
= 28V
Shutdown Supply Current (V
CC
)
220
350
V
FB
= 1.30V, V
CC
= 3V to 28V
V
CC
Supply Current (Note 1)
0.2
1
CS+ forced to GND
CS+ Input Current
5
15
25
Idle Mode Current-Sense Threshold
2.7
1.225
5.5
1.275
Input Voltage Range with V
CC
Tied to LDO
FB Threshold
1.250
1
20
115
V
FB
= 1.30V
FB Input Current
Current Limit Threshold
85
100
MIN
TYP
MAX
CONDITIONS
PARAMETER
kHz
V
mV
V
V
V
μA
μA
μA
mV
mV
nA
V
V
V
UNITS
1.8
LDO load =
∞
to 400
5V
≤
V
CC
≤
28V
(includes LDO dropout)
R
OSC
= 500k
±1%
0.013
Typically 0.013% per mV on CS+;
V
CS
+ range is 0 to 100mV for 0 to full
load current.
FB Threshold Load Regulation
%/mV
0.012
Typically 0.012% per % duty factor on
EXT; EXT duty factor for a step-up is:
100% (1 – V
IN
/V
OUT
)
FB Threshold Line Regulation
%/%
相關(guān)PDF資料
PDF描述
MAX669 QUADRUPLE 2-INPUT POSITIVE-OR GATES 14-CDIP -55 to 125
MAX668EUB 1.8V to 28V Input, PWM Step-Up Controllers in レMAX
MAX6687AU75H Local/Remote Temperature Switches in a レMAX Package
MAX6687AU40H Local/Remote Temperature Switches in a レMAX Package
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