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参数资料
| 型号： | MAX5039EUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/21页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR VOLT TRACK 8-MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 应用： | 处理器 |
| 电流 - 电源： | 1.3mA |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
Voltage-Tracking Controllers for
PowerPC, DSPs, and ASICs
threshold. Follow the guidelines below to program the
UVLO voltage:
1) Determine the V IN tolerance; ±5% is common.
2) Determine the V UVLO rising threshold tolerance:
Undervoltage lockout rising trip threshold, V UVCC ,
tolerance: 1.230V ±2.5%
Programming resistor tolerance: pick a ±1% resistor
or better (±1.6% over temperature from Table 1)
Resistor-divider ratio tolerance: ±1% maximum for
±1% resistors
Resistor value resolution: ±0.5% (can be zero if
tion mode. Follow these simple guidelines to stabilize the
linear loop: (see the Core Regulator Loop Bode Plot in
the Typical Operating Characteristics ).
1) Place C1, a 100nF ceramic capacitor (X5R, X7R
type or better) from NDRV to GND.
2) Select R1 and R2, a resistor-divider from CORE
to CORE_FB to GND to set the linear regulator
output regulation voltage (see the Programming
Core Voltage section).
3) Place R3 and C2, an RC network from CORE_FB
to NDRV. Set R3 = R1 and calculate C2 as follows:
exact resistor value is available)
Extra margin: ±1%
C 2 =
1
2 π × 10 kHz × R 3
Total = ±6.6%
3) Set V UVLO nominal value to:
V IN nominal value - (V IN tolerance + V UVLO toler-
ance)
4) Place R4, a preload resistor, from CORE to
GND.
Calculate R4 as follows:
4) Calculate R7 using the equation:
R 4 ≤
V CORE
0 . 03 A
R 7 = ? UVLONOM ? 1 ? R 8
? V ?
? V UVCC ?
where R8 is typically 10k ? .
5) Place R9 and C3, a lead network, from V CORE
to CORE_FB. Set R9 = R1/10, and calculate C3
as follows:
Example: V IN nominal value = 5V, V IN tolerance = ±5V%;
set the V UVLO nominal value to 5V - (5% + 6.6%) = 4.42V.
Choose R8 = 10.0k ? , ±1%:
C 3 =
1
2 π × 7227 Hz × R 9
R 7 = ? UVLONOM ? 1 ? R 8 = ?
? 1 ? 10 k ? = 25 . 93 k ?
? V ? ? 4 . 42 V
? V UVCC ? ? 1 . 230 V
?
?
Example: CORE power supply = 1.8V, V REGNOM =
1.6V, C CORE = 100μF, Q 1 = Si9428 (Vishay
Siliconix):
R1 = R3 = 10.0k ? , 1%
Use the next-lower value: R7 = 25.5k ? .
Linear Regulator Compensation
C 2 =
1
( 2 π × 10 kHz × 10 k ? )
= 1 . 6 nF
See the application circuit examples in Figures 9 and 10.
The external MOSFET, together with the feedback resis-
Use a 1.5nF standard value.
tor-divider, R1 and R2, from CORE to CORE_FB to GND,
and NDRV form a linear regulator loop. This linear regu-
lator should be compensated for stable operation.
R 4 ≤
1 . 6 V
0 . 03 A
= 53 ?
Note: The linear regulator spends most of its time in idle
mode. It operates in transient mode and regulation mode
Use a 51 ? standard value.
only during system power-up/power-down, brownout,
and occasional system load transient conditions. Loop
stability applies when the linear regulator is in the regula-
C 3 =
1
2 π × 7227 Hz × R 5
=
1
2 π × 7227 Hz × 1 k ?
= 22 nF
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| MAX5039EUA+ | 功能描述:其他电源管理 V-Track Ctlr for PowerPC DSPs & ASICs RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX5039EUA+T | 功能描述:其他电源管理 V-Track Ctlr for PowerPC DSPs & ASICs RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX5039EUA-T | 功能描述:其他电源管理 V-Track Ctlr for PowerPC DSPs & ASICs RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
| MAX503CAG | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MAX503CAG+ | 功能描述:数模转换器- DAC 10-Bit Precision DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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