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RT9059

超低壓差的 3A 線性穩壓器

RT9059
New

RT9059 是一款高性能的正電壓輸出線性穩壓器，適用於最大負載電流達 3A 而輸入電壓又很低並且輸入、輸出壓差也極低的應用。 它在 VDD 電壓為 3V、可調輸出電壓最低達 0.8V 時的 VIN 輸入電壓最低可至 1V。由於 RT9059 擁有超低輸入、輸出壓差的特性，非常適合使用在輸出電壓非常接近輸入電壓的應用中。它還具有使能控制引腳，關機狀態下的電流消耗可達極低水準，幾乎沒有任何功率損耗。它在整個輸入、輸出和工作溫度範圍內都能提供卓越的電壓調節性能，其 Power Good 信號輸出端可在輸出電壓達到額定電壓的 90% 以上時發出輸出正常的信號。

應用

  • 筆記型電腦
  • 電腦主機板

主要規格

RT9059 RT9059A RT9059B RT9059C
Status Active Active Active Active
Vin (min) (V) 1 1 1 1
Vin (max) (V) 5.5 5.5 5.5 5.5
Vout (min) (V) 0.8 0.8 0.8 0.8
Vout (max) (V) 4 4 4 4
Output Adj. Method Fixed;Resistor Resistor Resistor Resistor
Accuracy (+/- %) 1.5 1.5 1 1.5
Iout (max) (mA) 3000 3000 3000 3000
Iq (typ) (uA) 600 600 600 600
Vdropout @ rated current (typ) (mV) 250 @ 2A;350 @ 3A 250 @ 2A;350 @ 3A 250 @ 2A;350 @ 3A 250 @ 2A;350 @ 3A
Bias Rail Yes Yes Yes Yes
Cout Type Ceramic Ceramic Ceramic Ceramic
Charge Pump No No No No
Features Enable Input;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor Enable Input;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor Enable Input;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor Enable Input;Low Dropout;OCP;Power Good;Stable with Ceramic Capacitor
Package Type PSOP-8;WDFN3x3-10 WDFN3x3-10 WDFN3x3-10 WDFN3x3-10

關鍵特性

  • 電流負載能力：3A

  • 輸出電壓精度：1.5%

  • 3A 負載時的輸入、輸出直通壓差典型值為 350mV

  • Power Good 指示

  • 關機時時輸出端主動放電

  • 電流限制保護

  • 過熱關機保護

Application Notes

Datasheet

RT9059_DS-15.pdf

Datasheet

RT9059_DS-15.pdf

RT9059-15GQW
Package Type:WDFN3x3-10
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RT9059AGQW
Package Type:WDFN3x3-10
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RT9059GQW
Package Type:WDFN3x3-10
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RT9059GSP
Package Type:PSOP-8
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