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参数资料
| 型号： | MAX1763EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SYNC 3.3V/ADJ 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，2.5 V ~ 5.5 V |
| 输入电压： | 0.7 V ~ 5.5 V |
| PWM 型： | 混合物 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
Table 3. On/Off Logic Control
ONA
0
ONB
0
MAX1763
On
R G
20k
0
1
1
0
Off
On
V IN
1.5 μ H
C1
47 μ F
2.5V
C OUT
47 μ F
1
1
On
AO
CLK/SEL
LX
3.3V
TO V IN OR
V OUT
POUT
ONB
POUT
MBRO520L
C4
220 μ F
R3
AIN
MAX1763
AO
R6
150k
POWER-OK
OUTPUT
R3
165k
MAX1763
ONA OUT
AIN
R5
4.7 Ω
C2
1 μ F
R4
R4
100k
ISET
Figure 3. Using the Gain Block as a Power-OK Comparator
V IN
C3
0.22 μ F
REF
PGND
FB
GND
1.8V TO 5.5V
L1
1.5 μ H
C1
47 μ F
BOOST
OUTPUT
LINEAR-
Figure 5. Powering a Gain-Block Linear Regulator from the
Input Voltage
CLK/SEL
LX
P
REGULATED
OUTPUT
stage is 10mS. The internal gain block amplifies the dif-
ference between AIN and the internal 0.938V reference.
R3
ONA POUT
MAX1763
ONB OUT
R5
4.7 Ω
C4
220 μ F
R G
20k
C OUT
47 μ F
To provide a power-OK signal, connect the gain-block
input, AIN, to an external resistor-divider (Figure 3). The
input bias current into AIN is less than 30nA, allowing
large-value divider resistors without sacrificing accura-
cy. Connect the resistor voltage-divider as close to the
AIN
C2
1.0 μ F
IC as possible, within 0.2in (5mm) of AIN. Choose an
R4 value of 270k Ω or less, then calculate R3 using:
R3 = R4((V TRIP / V AIN ) - 1)
R4
0.22 μ F
ISET
REF
PGND
AO
FB
GND
R1
R2
30k
SIGNAL
GROUND
POWER
GROUND
where V AIN is 0.938V.
Figures 4 and 5 show the gain block used in a linear-
regulator application. The output of an external P-chan-
nel pass element is compared to an internal 0.938V
reference. The difference is amplified and drives the
Figure 4. Using the Gain Block as a Linear Regulator from the
Boosted Output Voltage
using an external P-channel MOSFET pass device. The
gain-block output is a single-stage transconductance
amplifier that drives an open-drain N-channel MOSFET.
The transconductance (G M ) of the entire gain-block
gate of the pass element. Use a logic-level PFET, such
as Fairchild’s NDS336P (R DS(ON) = 270m Ω ). When the
linear-regulator output voltage is in regulation, the
MOSFET will not be full on; thus, the on-resistance will
not be important. However, if the linear regulator is used
in dropout, the MOSFET on-resistance will determine
the dropout voltage (V DROPOUT = I OUT ? R DS(ON) ). If a
lower R DS(ON) PFET is used, increase the linear-regula-
tor output filter capacitance to maintain stability.
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1763EUE | 功能描述:直流/直流开关转换器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1763EUE+ | 功能描述:直流/直流开关转换器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1763EUE+T | 功能描述:直流/直流开关转换器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1763EUE+TG069 | 制造商:Maxim Integrated Products 功能描述: |
| MAX1763EUE-T | 功能描述:直流/直流开关转换器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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