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参数资料
| 型号： | LTC1436AEGN#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 2 A SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封装： | 0.150 INCH, PLASTIC, SSOP-24 |
| 文件页数： | 26/28页 |
| 文件大小： | 493K |
| 代理商： | LTC1436AEGN#PBF |
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7
LTC1436A
LTC1436A-PLL/LTC1437A
14367afb
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Auxiliary Regulator
Sink Current Available
AUX DR VOLTAGE (V)
0
AUX
DR
CURRENT
(mA)
5
10
15
20
24
6
8
1436 G19
10
12
14
16
Auxiliary Regulator PSRR
FREQUENCY (kHz)
10
20
30
40
50
60
70
PSRR
(dB)
100
1000
1436 G20
10mA LOAD
100mA LOAD
PIN FUNCTIONS
UU
U
VIN: Main Supply Pin. Must be closely decoupled to the
IC’s signal ground pin.
INTVCC: Output of the Internal 5V Regulator and EXTVCC
Switch. The driver and control circuits are powered from
this voltage. Must be closely decoupled to power ground
with a minimum of 2.2
Ftantalumorelectrolyticcapacitor.
DRVCC: Bottom MOSFET Driver Supply Voltage.
EXTVCC: Input to the Internal Switch Connected to INTVCC.
This switch closes and supplies VCC power whenever
EXTVCC is higher than 4.7V. See EXTVCC connection in
Applications Information section. Do not exceed 10V on
this pin. Connect to VOUT if VOUT ≥ 5V.
BOOST: Supply to Topside Floating Driver. The bootstrap
capacitor is returned to this pin. Voltage swing at this pin
is from INTVCC to VIN + INTVCC.
SW: Switch Node Connection to Inductor. Voltage swing
at this pin is from a Schottky diode (external) voltage drop
below ground to VIN.
SGND: Small Signal Ground. Must be routed separately
from other grounds to the (–) terminal of COUT.
PGND: Driver Power Ground. Connects to source of
bottom N-channel MOSFET and the (–) terminal of CIN.
SENSE –: The (–) Input to the Current Comparator.
SENSE +: The (+) Input to the Current Comparator. Built-
in offsets between SENSE– and SENSE+ pins in conjunction
with RSENSE set the current trip thresholds.
VOSENSE: Receives the remotely sensed feedback voltage
either from the output or from an external resistive divider
across the output . The VPROG pin determines which point
VOSENSE must connect to.
VPROG: This voltage selects the output voltage. For VPROG
< VINTVCC/3 the output is set to 3.3V with VOSENSE
connected to the output. With VPROG > VINTVCC/1.5 the
output is set to 5V with VOSENSE connected to the output.
Leaving VPROG open (DC) allows the output voltage to be
set by an external resistive divider connected to VOSENSE.
COSC: External capacitor COSC from this pin to ground sets
the operating frequency.
ITH: Error Amplifier Compensation Point. The current
comparator threshold increases with this control voltage.
Nominal voltage range for this pin is 0V to 2.5V.
RUN/SS: Combination of Soft Start and Run Control
Inputs. A capacitor to ground at this pin sets the ramp time
to full current output. The time is approximately 0.5s/
F.
LOAD CURRENT (A)
0.001
50
EFFICIENCY
(%)
POWER
LOSS
(W)
55
65
70
75
100
10
1
0.1
0.01
0.001
85
0.01
0.1
1
1436 G21
60
90
95
80
10
POWER LOSS
VIN = 10V
VOUT = 5V
RSENSE = 0.033
EFFICIENCY
Efficiency and Power Loss vs
Load Current
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相关代理商/技术参数 |
参数描述 |
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| LTC1436AIGN | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1436AIGN#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1436AIGN#TR | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC1436AIGN#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
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