參數(shù)資料
型號(hào)： MAX5023_ASA
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的，低靜態(tài)電流，高電壓線性レP復(fù)位和看門(mén)狗定時(shí)器穩(wěn)壓器
文件頁(yè)數(shù)： 10/13頁(yè)
文件大小： 371K
代理商： MAX5023_ASA
M
Select preset voltage mode by connecting SET to
ground. In adjustable mode, select an output between
+2.5V and +11V using two external resistors connected
as a voltage-divider to SET (Figure 4). Set the output
voltage using the following equation:
V
OUT
= V
SET
(1 + R1 / R2)
where V
SET
= 1.248V and R2
100k
.
Available Output Current Calculation
The MAX5023/MAX5024 high-voltage regulator pro-
vides up to 150mA of output current. The input voltage
extends to +65V. Package power dissipation limits the
amount of output current available for a given input/
output voltage and ambient temperature. Figure 5
depicts the maximum power dissipation curve for these
devices. The graph assumes that the exposed metal
back of the MAX5023/MAX5024 package is soldered to
1in
2
of PC board copper.
Use Figure 5 to determine the allowable package dissi-
pation for a given ambient temperature. Alternately, use
the following formula to calculate the allowable pack-
age dissipation:
After determining the allowable package dissipation,
calculate the maximum output current using the follow-
ing formula:
The above equations do not include the negligible
power dissipation from self-heating due to the IC
ground current.
I
P
- V
OUT
V
mA
OUT MAX
D
IN
)
≤
150
P
W for T
- 0.01923 T -
C
C for
°
C
C
D
A
=
≤ +
°
+
° <
≤ +
°
1.
70
1 538
.
70
70
125
T
A
65V, Low-Quiescent-Current, High-Voltage Linear
Regulators with μP Reset and Watchdog Timer
10
______________________________________________________________________________________
IN
EN
GND
HOLD
V
OUT
= V
SET
(1 + R1 / R2)
V
SET
= 1.248V
R2 = 1k
TO 500k
SET
OUT
RESET
TO
μ
P
15
μ
F
R1
+6.5V TO +65V
+2.5V TO +11V
ON
OFF
R2
MAX5024
10
μ
F
Figure 4. Setting the MAX5024 Adjustable Output Voltage
10
20
30 40 50
60 70
80 90 100 110 120 130 140 150
T
A
(
°
C)
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
P
D
DERATE
19.23mW/
°
C
1.538W
Figure 5. Maximum Power Dissipation vs. Temperature
Table 1. Truth Table for Regulator Output
State
X = Don’t care.
ORDER
EN
HOLD
OUT
COMMENTS
1
Low
X
Off
Initial state. EN has 5M
internal resistor to ground.
HOLD
has internal current
source to OUT.
2
High
X
On
Regulator output is active
when EN is pulled high.
3
High
Low
On
Hold is asserted forcing the
regulator output on even if
EN goes low.
4
X
Low
On
S el - hol d ng state. Reg ul ator
outp ut stays on r eg ar d ess of
the state of E N
5
Low
High
Off
Regulator output is
shutdown by releasing
HOLD
while EN remains low.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(lèi)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(lèi)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(lèi)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(lèi)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
MAX5023MASA 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) RoHS:否 制造商:STMicroelectronics 輸出類(lèi)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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