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參數(shù)資料
| 型號： | MAX5023 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 65V, Low-Quiescent-Current, High-Voltage Linear Regulators with レP Reset and Watchdog Timer |
| 中文描述： | 65V、低靜態(tài)電流、高壓線性穩(wěn)壓器，帶有微處理器復(fù)位及看門狗定時(shí)器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 371K |
| 代理商： | MAX5023 |
Example 1:
T
A
= +95
°
C
V
IN
= +14V
V
OUT
= +5V
Find the maximum allowable output current. First calcu-
late package dissipation at the given temperature as
follows:
Then determine the maximum output current:
)
=
(
(
Example 2:
T
A
= +125
°
C
V
IN
= +14V
V
OUT
= +3.3V
Calculate package dissipation at the given temperature
as follows:
=
480 4
.
And establish the maximum current:
Example 3:
T
A
= +50
°
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:
=
(
(
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.
Capacitor Selection and Regulator
Stability
For stable operation over the full temperature range
and with load currents up to 150mA, use a 15μF (min)
output capacitor with an ESR < 0.5
. To reduce noise
and improve load-transient response, stability, and
power-supply rejection, use larger output capacitor val-
ues such as 22μF.
Some ceramic dielectrics exhibit large capacitance
and ESR variation with temperature. For dielectric
capacitors such as Z5U and Y5V, use 22μF or more to
ensure stability at temperatures below -10
°
C. With X7R
or X5R dielectrics, 15μF should be sufficient at all oper-
ating temperatures. For high-ESR tantalum capacitors
use 22μF or more to maintain stability. To improve
power-supply rejection and transient response use a
minimum 10μF capacitor between IN and GND.
I
W
V
mA
I
mA
OUT MAX
OUT MAX
)
)
)
) (
)
=
=
1 538
14
170 9
150
.
.
I
mW
V
mA
OUT MAX
)
=
(
)
(
) (
)
=
480 4
14
44 89
.
.
P
W
mW
D
=
°
)
1 538
.
25
- 0.01923W/ C 1
C-70 C
I
W
V
mA
OUT MAX
)
) (
)
=
1 057
14
117 4
.
.
M
65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with μP Reset and Watchdog Timer
______________________________________________________________________________________
11
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
M
V
IN
(V)
I
O
65
60
5 10 15
25 30 35 40 45 50
20
55
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0
0
70
V
OUT
= +5V
DEVICE EXPOSED
PAD SOLDERED TO
1IN
2
COPPER ISLAND
T
A
= +70
°
C
T
A
= +125
°
C
T
A
= +85
°
C
Figure 6. Maximum Output Current vs. Input Voltage
P
W
W
D
=
)
=
1 538
.
1 057
.
- 0.01923W/ C 95 C -70 C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5023_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:65V, Low-Quiescent-Current, High-Voltage Linear Regulators with μP Reset and Watchdog Timer |
| MAX5023_ASA | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:65V, Low-Quiescent-Current, High-Voltage Linear Regulators with レP Reset and Watchdog Timer |
| MAX5023LASA | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 65V Low-Q w/uP Reset & Watchdog Timer RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MAX5023LASA+ | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 65V Low-Q w/uP Reset & Watchdog Timer RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MAX5023LASA+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 65V Low-Q w/uP Reset & Watchdog Timer RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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