Datasheet > AS1310-BTDT-25

AS1310-BTDT-25

更新时间： 2024-02-13 17:52:59

品牌	Logo	应用领域
艾迈斯 - AMSCO		转换器升压转换器
页数	文件大小	规格书
20页	1271K
描述
Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter

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AS1310-BTDT-25 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	7.89	Base Number Matches：	1

AS1310-BTDT-25 数据手册

AS1310

Datasheet - Detailed Description

Figure 13. Simplified Voltage and Current Waveforms

0.99V_{OUT_NOM}

V_OUT

V_OUTRipple

V_{IND_TOFF}

V_IN

V_{IND_TON}

T_OFFT_WAIT

T_ON

T_OFFT_WAIT

I_L

SW1_on

SW2_off

I_PK

SW2_on

SW1_off

Another important relationship is the “volt-seconds” law. Expressed as following:

V_ONT_ON= V_OFFT_OFF

(EQ 4)

Voltages are those measured across the inductor during each time segment. Figure 13 shows this graphically with the shaded segments marked

“A & B”. Re-arranging (EQ 4):

_OUT– V_IN

------^O---^N---

T_OFF

----------------------------

(EQ 5)

V_IN

The time segment called T_WAITin Figure 13 is a measure of the “hold-up” time of the output capacitor. While the output voltage is above the

threshold (0.99xVOUT), the output is assumed to be in regulation and no further switching occurs.

8.1.2 Inductor Choice Example

For the AS1310 V_{IN_MIN}= 0.9V, V_{OUT_MAX}= 3.3V, (EQ 5) gives Ton=2.66T_OFF

Let the maximum operating on-time = 1µs.

Note that this is shorter than the minimum limit on-time of 3.6µs. Therefore from (EQ 5), T_OFF= 0.376µs. Using (EQ 3), L_MAXis obtained:

L_MAX= 1.875µH. The nearest preferred value is 2.2µH.

This value provides the maximum energy storage for the chosen fixed on-time limit at the minimum VIN.

www.austriamicrosystems.com/DC-DC_Step-Up/AS1310

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与AS1310-BTDT-25相关器件

型号	品牌	获取价格	描述	数据表
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AS1310-BTDT-30	AMSCO	获取价格	Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter
AS1310-BTDT-33	AMSCO	获取价格	Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter
AS1310-BTDT-331	AMSCO	获取价格	Ultra Low Quiescent Current, Hysteretic DC-DC Step-Up Converter
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AS1312-BTDT-50	AMSCO	获取价格	Ul t ra Low Quiescent Cur rent , Hysteret ic DC-DC Step-Up Conver ter