MAX17510ATB+T Maxim Integrated Products, MAX17510ATB+T Datasheet - Page 10

• Manufacturer Part Number: MAX17510ATB+T
• Description: IC REG DDR LOW VOLTAGE 10-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX17510ATB+T

• Applications: Converter, DDR
• Voltage - Input: 1.1 ~ 3.6 V
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 1.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Voltage DDR Linear Regulators
The MAX1510/MAX17510 provide an open-drain
PGOOD output that goes high 2ms (typ) after the out-
put initially reaches regulation during startup as shown
in Figure 3. PGOOD transitions low 10µs after the out-
put goes out of regulation by ±150mV, or when the
device enters shutdown. Connect a pullup resistor from
PGOOD to V
resistor to minimize current consumption.
By changing the voltage at REFIN, the MAX1510/
MAX17510 can be used in applications that require
dynamic output-voltage changes between two set
points (graphics processors). Figure 4 shows a dynam-
ically adjustable resistive voltage-divider network at
REFIN. Using an external signal MOSFET, a resistor
can be switched in and out of the REFIN resistor-
divider, changing the voltage at REFIN. The two output
voltages are determined by the following equations:
Figure 3. MAX1510/MAX17510 PGOOD and Soft-Start Waveforms
10
______________________________________________________________________________________
V
V
Dynamic Output-Voltage Transitions
CURRENT LIMIT
OUT LOW
OUT HIGH
POWER-GOOD
WINDOW
CC
(
(
PGOOD
SHDN
Applications Information
OUT
for a logic-level output. Use a 100kΩ
)
)
=
=
V
V
REF
REF
200μs
Power-Good (PGOOD)
⎛
⎜
⎝
⎡
⎢
⎢
⎣
R
R
2ms STARTUP
1
1
R
(
DELAY
+
+
R
2
2
R
(
R
2
+
2
⎞
⎟
⎠
R
3
+
)
R
3
)
⎤
⎥
⎥
⎦
PROPAGATION
DELAY
10μs
Figure 4. Dynamic Output-Voltage Change
V
V
OUTPUT OVERLOAD
CONDITION
OUT(LOW)
OUT(HIGH)
V
OUT(HIGH)
= V
=
V
REF
REF
10μs
PROPAGATION
DELAY
( )
V
R1 + (R2 + R3)
R1 + R2
OUT(LOW)
R2
(R2 + R3)
C
REFIN
REFERENCE
R1
R2
R3
VOLTAGE
(V
REF
)
REFIN
MAX17510
MAX1510