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MAX1515ETG+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
MAX1515
Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
4 _______________________________________________________________________________________
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
REFERENCE
T
A
= +25°C to
+85°C
1.0923 1.100 1.1077
Reference Voltage V
REF
V
CC
= +3.0V to +3.6V
T
A
= 0°C to
+85°C
1.0907 1.100 1.1094
V
Reference Load Regulation I
REF
= -1µA to +50µA 10 mV
REFIN Input Voltage Range V
REFIN
V
CC
= +3.0V to +3.6V 0.5 1.5 V
V
REFIN
= +0.5V to +1.5V
I
REFOUT
= -1mA
to +1mA
-10
+10
REFOUT Output Accuracy
V
REFIN
-
V
REFOUT
V
REFIN
= +0.5V to +1.5V
I
REFOUT
= -5mA
to +5mA
-20 +20
mV
REFIN Input Bias Current I
REFIN
V
REFIN
= 1.1V -50
+50
nA
FAULT DETECTION
Thermal Shutdown T
SHDN
Rising, hysteresis = 15°C
+165
°C
Undervoltage-Lockout Threshold
V
CC
(
UVLO
)
V
CC
rising, 2% falling-edge hysteresis 2.5 2.7 2.9 V
PGOOD Trip Threshold (Lower) No load, falling edge, hysteresis = 1% -13 -10 -7 %
PGOOD Trip Threshold (Upper) No load, rising edge, hysteresis = 1% +7
+10 +13
%
PGOOD Propagation Delay
t
PGOOD
FB forced 2% beyond PGOOD trip
threshold
10 µs
PGOOD Output Low Voltage I
SINK
= 1mA 0.1 V
PGOOD Leakage Current
Condition
H i g h state, for ced to 3.6V ; V
C C
= V
D D
= 3.6V
1µA
INPUTS AND OUTPUTS
Logic Input High Voltage SKIP, SHDN, MODE, FBSEL0, FBSEL1 2.0 V
Logic Input Low Voltage SKIP, SHDN, MODE, FBSEL0, FBSEL1 0.8 V
Logic Input Current SKIP, SHDN, MODE, FBSEL0, FBSEL1
-0.5 +0.5
µA
MAX1515
Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
IN
= +3.3V, V
CC
= V
DD
= SHDN = MODE = +3.3V, V
REFIN
= V
REF
, SKIP = GND, T
A
= -40°C to +85°C, unless
otherwise noted. Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLER
V
IN
1.3 3.6
Input Voltage Range
V
CC
, V
DD
3.0 3.6
V
Output Adjust Range V
OUT
≤ V
IN
0.5
V
CC
V
V
FB
-
V
REFIN
V
IN
= +3.3V, I
LOAD
= 0, MODE = V
CC
-5 +5 mV
FBSEL0 = V
CC
,
FBSEL1 = V
CC
,
REFIN = REF
2.438 2.562
FBSEL0 = V
CC
,
FBSEL1 = GND,
REFIN = REF
1.755 1.845
FBSEL0 = GND,
FBSEL1 = V
CC
,
REFIN = REF
1.463 1.538
Feedback Voltage Accuracy
V
FB
V
IN
= +3.3V, I
LOAD
= 0,
MODE = low
FBSEL0 = GND,
FBSEL1 = GND,
REFIN = 0.5V
0.487 0.513
V
Sink-Mode Detect Threshold
V
FB
-
V
REFIN
MODE = V
CC
, V
REFIN
= +0.5V to +1.5V
+15 +35
mV
Source-Mode Detect Threshold
V
FB
-
V
REFIN
MODE = V
CC
, V
REFIN
= +0.5V to +1.5V -35 -15 mV
nFET On-Resistance R
NMOS
V
CC
= V
DD
= V
IN
= +3.3V, I
LOAD
= 0.5A
0.10
Ω
Switching Frequency f
SW
(Note 2) 1
MHz
Current-Limit Threshold
I
LIMIT_P
V
IN
= +3.3V, MODE = GND or V
CC
,
positive or sourcing mode
3.35 5.05
A
Pulse-Skipping Current Threshold
I
SKIP_P
V
IN
= +3.3V, MODE = GND or V
CC
,
positive or sourcing mode
0.4 1.2 A
R
TOFF
= 33.2kΩ 0.250 0.425
R
TOFF
= 110kΩ
0.8 1.2
Off-Time t
OFF
V
FB
> 0.3 x V
TARGET
(Note 4)
R
TOFF
= 499kΩ
3.8 5.2
µs
Maximum On-Time
t
ON
(
MAX
)
5µs
SS Source Current
I
SS
(
SRC
)
37µA
SS Sink Current
I
SS
(
SNK
)
100 µA
MAX1515
Low-Voltage, Internal Switch,
Step-Down/DDR Regulator
6 _______________________________________________________________________________________
Note 2: Guaranteed by design. Not production tested.
Note 3: Not tested; guaranteed by layout. Maximum output current may be limited by thermal capability to a lower value.
Note 4: V
TARGET
is the set output voltage determined by V
REFIN
, FBSEL0, and FBSEL1.
Note 5: Specifications to -40°C are guaranteed by design, not production tested.
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
= -40°C to +85°C, unless
otherwise noted. Note 5)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
MODE = GND,
FBSEL0 =
FBSEL1 = GND,
V
FB
= 1.01 x
V
TARGET
900
No-Load Supply Current
I
CC
+ I
DD
+ I
IN
V
IN
= 3.3V
(Note 4)
MODE = V
CC
V
FB
= V
TARGET
1300
µA
I
CC
+ I
DD
+ I
IN
SHDN = MODE = GND, LX = 0V or 3.3V 20
I
IN
SHDN = MODE = GND, LX = 0V 20
Shutdown Supply Currents
I
LX
SHDN = MODE = GND, LX = 3.3V 20
µA
REFERENCE
Reference Voltage V
REF
V
CC
= +3.0V to +3.6V 1.086
1.114
V
Reference Load Regulation I
REF
= -1µA to +50µA 12 mV
REFIN Input Voltage Range V
REFIN
V
C C
= + 3.0V to + 3.6V , V
C C
> V
RE F IN
+ 1.35V 0.5 1.5 V
V
REFIN
= +0.5V to +1.5V
I
REFOUT
= -1mA
to +1mA
-15
+15
REFOUT Output Accuracy
V
REFIN
-
V
REFOUT
V
REFIN
= +0.5V to +1.5V
I
REFOUT
= -5mA
to +5mA
-25
+25
mV
FAULT DETECTION
Undervoltage-Lockout Threshold
V
CC
(
UVLO
)
V
CC
rising, 2% falling-edge hysteresis
2.40 2.95
V
PGOOD Trip Threshold (Lower) No load, falling edge, hysteresis = 1% -13 -7 %
PGOOD Trip Threshold (Upper) No load, rising edge, hysteresis = 1% +7
+13
%
INPUTS AND OUTPUTS
Logic Input High Voltage SKIP, SHDN, MODE, FBSEL0, FBSEL1 2.0 V
Logic Input Low Voltage SKIP, SHDN, MODE, FBSEL0, FBSEL1 0.8 V
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

MAX1515ETG+

Mfr. #:
Buy MAX1515ETG+
Manufacturer:
Maxim Integrated
Description:
Switching Voltage Regulators 3A 1MHz Step-Down DDR Regulator
Lifecycle:
New from this manufacturer.
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