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參數(shù)資料
| 型號： | MAX1515ETG |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low-Voltage, Internal Switch, Step-Down/DDR Regulator |
| 中文描述： | 4.7 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, QCC24 |
| 封裝： | 4 X 4 MM, 0.8 MM HEIGHT, MO-220-WGGD, TQFN-8 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 504K |
| 代理商： | MAX1515ETG |
M
Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
IN
= +3.3V, V
CC
= V
DD
=
SHDN
= MODE = +3.3V, V
REFIN
= V
REF
,
SKIP
= GND,
T
A
= 0°C to +85°C
, unless oth-
erwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Sink-Mode Detect Threshold
V
FB
-
V
REFIN
MODE = V
CC
, V
REFIN
= +0.5V to +1.5V
+18
+32
mV
Source-Mode Detect Threshold
V
FB
-
V
REFIN
R
NMOS
f
SW
I
OUT(RMS)
MODE = V
CC
, V
REFIN
= +0.5V to +1.5V
-32
-18
mV
MOSFET On-Resistance
Switching Frequency
Maximum Output Current
V
CC
= V
DD
= V
IN
= +3.3V, I
LOAD
= 0.5A
(Note 2)
(Note 3)
0.04
0.10
1
Ω
MHz
A
3.3
I
LIMIT_P
V
IN
= +3.3V, MODE = GND or V
CC
,
positive or sourcing mode
3.60
4.2
4.85
Current-Limit Threshold
I
LIMIT_N
MODE = V
CC
, negative or sinking mode
V
IN
= +3.3V, MODE = GND or V
CC
, positive
or sourcing mode
-3.0
A
Pulse-Skipping Current Threshold
I
SKIP_P
0.5
0.8
1.1
A
I
ZX_P
V
IN
= +3.3V, MODE = GND or V
CC
, positive
or sourcing mode
200
Zero Cross Current Threshold
I
ZX_N
MODE = V
CC
, negative or sinking mode
FB = 1.01 x V
TARGET
(Note 4)
-350
mA
FB Input Bias Current
-50
0.270
0.85
3.8
+50
0.405
1.15
5.2
nA
R
TOFF
= 33.2k
Ω
R
TOFF
= 110k
Ω
R
TOFF
= 499k
Ω
0.34
1.00
4.5
Off-Time
t
OFF
V
FB
> 0.3 x V
TARGET
(Note 4)
μs
Extended Off-Time
t
OFF(EXT)
V
FB
< 0.3 x V
TARGET
(Notes 2, 4)
4 x
t
OFF
180
11
5.25
μs
Minimum On-Time
Maximum On-Time
SS Source Current
SS Sink Current
t
ON(MIN)
t
ON(MAX)
I
SS(SRC)
I
SS(SNK)
(Note 2)
ns
μs
μA
μA
5
3.50
100
6.75
MODE = GND,
FBSEL0 = GND,
FBSEL1 = GND,
V
FB
= 1.01 x
V
TARGET
450
800
No-Load Supply Current
I
CC
+ I
DD
+ I
IN
V
IN
= 3.3V
(not switching) (Note 4)
MODE = V
CC
,
V
FB
= V
TARGET
700
1200
μA
I
CC
+ I
DD
+ I
IN
I
IN
I
LX
SHDN
= MODE = GND, LX = 0V or 3.3V
0.2
20
SHDN
= MODE = GND, LX = 0V
SHDN
= MODE = GND, LX = 3.3V
0.2
0.1
20
20
Shutdown Supply Currents
μA
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