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參數資料
| 型號： | RR0816P-272-D |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2-ch DC/DC Converter IC |
| 中文描述： | 2通道直流/直流轉換器集成電路 |
| 文件頁數： | 17/36頁 |
| 文件大?。?/td> | 380K |
| 代理商： | RR0816P-272-D |
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MB39A104
17
I
ABOUT TIMER-LATCH PROTECTION CIRCUIT
1.
Setting Timer-Latch Overcurrent Protection Detection Current
The overcurrent protection circuit is actuated upon completion of the soft-start period. When an overcurrent
flows, the circuit detects the increase in the voltage between the FET’s drain and source using the external FET
ON resistor (R
ON
), actuates the timer circuit, and starts charging the capacitor C
SCP
connected to the CSCP
terminal (pin 8). If the overcurrent remains flowing beyond the predetermined period of time, the circuit sets the
latch to fix OUT terminals (pin 3, 22) at “H” level and turn off the external FET. The detection current value can
be set by the resistors (R
LIM1
and R
LIM2
) connected between the FET’s drain and the ILIM1 terminal (pin 5) and
between the drain and the ILIM2 terminal (pin 20), respectively.
The internal current (I
LIM
) can be set by the timing resistor (R
T
) connected to the RT terminal (pin 12).
Time until activating timer circuit and setting latch is equal to short-circuit detection time in "2. Setting Time
Constant for Timer-Latch Short-Circuit Protection Circuit".
Internal current value: I
LIM
Detection current value: I
OCP
R
LIM
: Overcurrent detection resistor
R
ON
: External FET ON resistor
V
IN
: Input voltage
V
O
: DC/DC converter output voltage
f
OSC
: Oscillation frequency
L
: Coil inductance
To reset the actuated protection circuit, either the power supply turn off and on again or set the CTL terminal
(pin 24) to the "L" level to lower the VREF terminal (pin 17) voltage to 2.4 V (Min) or less.
I
LIM
(
μ
A) :
2700
R
T
(k
)
I
OCP
(A) :
I
LIM
(A)
×
R
LIM
(
)
R
ON
(
)
(V
IN
(V)
V
O
(V))
×
V
O
(V)
2
×
V
IN
(V)
×
f
OSC
(Hz)
×
L(H)
+
8
20
5
4
21
CSCP
Current
Protection
Logic
(1
μ
A)
VREF
UVLO
S
Latch
R
ILIM1
(R
LIM
)
(ILIM2)
VS1
(VS2)
V
IN
Q1
L
V
O
Each
Channel
Drive
Overcurrent detection circuit
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相關代理商/技術參數 |
參數描述 |
|---|---|
| RR0816P-273-B-T5 | 功能描述:RES 27.0K OHM 1/16W .1% 0603 SMD RoHS:是 類別:電阻器 >> 芯片電阻 - 表面安裝 系列:RR 產品培訓模塊:CRCW-HP Thick Film Chip Resistors 產品目錄繪圖:CRCW-HP-402, 603, 805, 1206, 2010, 2512 Top CRCW HP 402, 603, 805, 1206, 2010, 2512 Side 標準包裝:5,000 系列:CRCW-HP - 汽車 電阻（歐姆）:255k 功率（瓦特）:0.25W，1/4W 復合體:厚膜 特點:脈沖耐受 溫度系數:±100ppm/°C 容差:±1% 封裝/外殼:0603（1608 公制） 尺寸/尺寸:0.063" L x 0.033" W（1.60mm x 0.85mm） 高度:0.022"（0.55mm） 端子數:2 包裝:帶卷 (TR) |
| RR0816P-273-B-T5 | 制造商:Susumu Co Ltd 功能描述:Thin Film Chip Resistor |
| RR0816P-273-D | 功能描述:薄膜電阻器 - SMD 1/16W 27Kohm 0.5% 25ppm RoHS:否 制造商:AVX 電阻:50 Ohms 容差:2 % 溫度系數:150 PPM / C 封裝 / 箱體:2010 (5025 metric) 功率額定值:10 W 系列:RP9 電壓額定值: 工作溫度范圍:- 55 C to + 150 C 端接類型:SMD/SMT 尺寸:2.54 mm W x 5.08 mm L x 1.02 mm H 封裝:Reel |
| RR0816P-2740-D-43A | 功能描述:薄膜電阻器 - SMD 1/16W 274ohm 0.5% 25ppm RoHS:否 制造商:AVX 電阻:50 Ohms 容差:2 % 溫度系數:150 PPM / C 封裝 / 箱體:2010 (5025 metric) 功率額定值:10 W 系列:RP9 電壓額定值: 工作溫度范圍:- 55 C to + 150 C 端接類型:SMD/SMT 尺寸:2.54 mm W x 5.08 mm L x 1.02 mm H 封裝:Reel |
| RR0816P-2741-D-43H | 功能描述:薄膜電阻器 - SMD 1/16W 2.74Kohm 0.5% 25ppm RoHS:否 制造商:AVX 電阻:50 Ohms 容差:2 % 溫度系數:150 PPM / C 封裝 / 箱體:2010 (5025 metric) 功率額定值:10 W 系列:RP9 電壓額定值: 工作溫度范圍:- 55 C to + 150 C 端接類型:SMD/SMT 尺寸:2.54 mm W x 5.08 mm L x 1.02 mm H 封裝:Reel |
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