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參數(shù)資料
| 型號(hào)： | MAX1510ETB+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 可調(diào)正電壓?jiǎn)温份敵鯨DO穩(wěn)壓器 |
| 英文描述： | Low-Voltage DDR Linear Regulator |
| 中文描述： | 0.5 V-1.5 V ADJUSTABLE POSITIVE LDO REGULATOR, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, TDFN-10 |
| 文件頁(yè)數(shù)： | 13/13頁(yè) |
| 文件大小： | 540K |
| 代理商： | MAX1510ETB+ |
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MAX1510/MAX17510
Low-Voltage DDR Linear Regulators
_______________________________________________________________________________________
9
The MAX1510/MAX17510 feature an open-drain
PGOOD output that transitions high 2ms after the out-
put initially reaches regulation. PGOOD goes low within
10s of when the output goes out of regulation by
±150mV. The MAX1510/MAX17510 feature current- and
thermal-limiting circuitry to prevent damage during fault
conditions.
3.3V Bias Supply (VCC)
The VCC input powers the control circuitry and provides
the gate drive to the pass transistor. This improves effi-
ciency by allowing VIN to be powered from a lower sup-
ply voltage. Power VCC from a well-regulated 3.3V
supply. Current drawn from the VCC supply remains rel-
atively constant with variations in VIN and load current.
Bypass VCC with a 1F or greater ceramic capacitor as
close to the device as possible.
VCC Undervoltage Lockout (UVLO)
The VCC input undervoltage-lockout (UVLO) circuitry
ensures that the regulator starts up with adequate volt-
age for the gate-drive circuitry to bias the internal pass
transistor. The UVLO threshold is 2.55V (typ). VCC must
remain above this level for proper operation.
Power-Supply Input (IN)
IN provides the source current for the linear regulator’s
output, OUT. IN connects to the drain of the internal n-
channel power MOSFET. IN can be as low as 1.1V,
minimizing power dissipation. The input UVLO prohibits
operation below 0.8V (typ). Bypass IN with a 10F or
greater capacitor as close to the device as possible.
Reference Input (REFIN)
The MAX1510/MAX17510 regulate OUTS to the voltage
set at REFIN, making the MAX1510/MAX17510 ideal for
memory applications where the termination supply must
track the supply voltage. Typically, REFIN is set by an
external resistive voltage-divider connected to the
memory supply (VDDQ) as shown in Figure 1.
The maximum output voltage of 1.5V is limited by the
gate-drive voltage of the internal n-channel power
transistor.
Buffered Reference Output (REFOUT)
REFOUT is a unity-gain transconductance amplifier that
generates the DDR reference supply. It sources and
sinks greater than 5mA. The reference buffer is typically
connected to ceramic bypass capacitors (0.33F to
1.0F). REFOUT is active when VREFIN > 0.45V and
VCC is above VUVLO. REFOUT is independent of
SHDN.
Shutdown
Drive
SHDN low to disable the error amplifier, gate-
drive circuitry, and pass transistor (Figure 2). In shut-
down, OUT is terminated to GND with an 8
Ω MOSFET.
REFOUT is independent of
SHDN. Connect SHDN to
VCC for normal operation.
Current Limit
The MAX1510/MAX17510 feature source and sink cur-
rent limits to protect the internal n-channel MOSFETs.
The source and sink MOSFETs have a typical 3A cur-
rent limit (1.8A min). This current limit prevents damage
to the internal power transistors, but the device can
enter thermal shutdown if the power dissipation
increases the die temperature above +165
°C (see the
Thermal-Overload Protection section).
Soft-Start Current Limit
Soft-start gradually increases the internal source cur-
rent limit to reduce input surge currents at startup. Full-
source current limit is available after the 200s soft-start
timer has expired. The soft-start current limit is
given by:
where ILIMIT and tSS are from the Electrical
Characteristics.
Thermal-Overload Protection
Thermal-overload protection prevents the linear regula-
tor from overheating. When the junction temperature
exceeds +165°C, the linear regulator and reference
buffer are disabled, allowing the device to cool. Normal
operation resumes once the junction temperature cools
by 15
°C. Continuous short-circuit conditions result in a
pulsed output until the overload is removed. A continu-
ous thermal-overload condition results in a pulsed out-
put. For continuous operation, do not exceed the
absolute maximum junction-temperature rating
of +150°C.
I
It
t
LIMIT SS
LIMIT
SS
() =
×
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1510ETB/V+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) Low-Voltage DDR Linear Regulator 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 |
| MAX1510ETB+ | 制造商:Maxim Integrated Products 功能描述:REG LDO LIN ADJ POS 0.5V TO 1.5V 3A 10TDFN EP - Rail/Tube 制造商:Maxim Integrated Products 功能描述:LOW-VOLTAGE DDR LINEAR REGULATOR |
| MAX1510ETB+T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) DDR Linear Regulator 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 |
| MAX1510ETB-T | 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 |
| MAX1510EVKIT | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) Evaluation Kit for the MAX1510 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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