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MAX5024LASA+ Datasheet

  • MAX5024LASA+

  • LINEAR REG,L-QUIESCENT-CURRENT,5024; Voltage Regulator Type:...

  • 13頁

  • Maxim   Maxim

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65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with 碌P Reset and Watchdog Timer
MAX5023/MAX5024
Example 1:
T
A
= +95擄C
V
IN
= +14V
V
OUT
= +5V
Find the maximum allowable output current. First calcu-
late package dissipation at the given temperature as
follows:
P
D
=
1
.
538W -
(
0.01923W/
擄
C
) (
95
擄
C - 70
擄
C
=
1
.
057W
Then determine the maximum output current:
I
OUT
(
MAX
)
=
Example 2:
T
A
= +125擄C
V
IN
= +14V
V
OUT
= +3.3V
Calculate package dissipation at the given temperature
as follows:
P
D
=
1
.
538W -
(
0.01923W/
擄
C
) (
125
擄
C - 70
擄
C
=
480
.
4mW
And establish the maximum current:
I
OUT
(
MAX
)
=
In Example 3, the maximum output current is calculated
as 170.9mA, however, the maximum output current
cannot exceed 150mA. Use Figure 6 to quickly deter-
mine allowable maximum output current for selected
ambient temperatures.
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
0.14
0.12
I
OUT(MAX)
(A)
0.10
0.08
0.06
0.04
0.02
T
A
= +125擄C
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70
V
IN
(V)
T
A
= +85擄C
V
OUT
= +5V
DEVICE EXPOSED
PAD SOLDERED TO
1IN
2
COPPER ISLAND
T
A
= +70擄C
MAX5023 fig04
0.16
)
(
1.057W
)
=
117.4mA
(
14 V
)
-
(
5V
)
Figure 6. Maximum Output Current vs. Input Voltage
)
Capacitor Selection and Regulator
Stability
For stable operation over the full temperature range
and with load currents up to 150mA, use a 15碌F (min)
output capacitor with an ESR < 0.5鈩? To reduce noise
and improve load-transient response, stability, and
power-supply rejection, use larger output capacitor val-
ues such as 22碌F.
Some ceramic dielectrics exhibit large capacitance
and ESR variation with temperature. For dielectric
capacitors such as Z5U and Y5V, use 22碌F or more to
ensure stability at temperatures below -10擄C. With X7R
or X5R dielectrics, 15碌F should be sufficient at all oper-
ating temperatures. For high-ESR tantalum capacitors
use 22碌F or more to maintain stability. To improve
power-supply rejection and transient response use a
minimum 10碌F capacitor between IN and GND.
(
480.4mW
)
=
44.89mA
(
14 V
)
-
(
3.3V
)
Example 3:
T
A
= +50擄C
V
IN
= +14V
V
OUT
= +5V
Calculate package dissipation at the given temperature
as follows:
P
D
= 1.538W
And find the maximum output current:
I
OUT
(
MAX
)
=
(
1.538W
)
=
170.9mA
鈬?/div>
I
OUT
(
MAX
)
=
150mA
(
14 V
)
-
(
5V
)
______________________________________________________________________________________
11

MAX5024LASA+ 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，固定式或可調式

  • 5V，2.5 V ~ 11 V

  • 6.5 V ~ 65 V

  • 0.9V @ 150mA

  • 1

  • 150mA（最?。?/p>

  • -40°C ~ 125°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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