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Hi Team,
Ctm need a LDO with similar function like REG103GA-A/2K5, but need Vo=7.7V or 12V. Most LDO we are using has Cout=1uF, which is not acceptable in some use scenario, so we are seek for the LDO
Hi Holly,
Are there any input voltage requirements for your application?
Regards,
Andres
Hi Andres,
For more details, pls see below
Hi Holly,
Thank you for the additional details.
Given these parameters my recommendation would be LM317M, however given its dropout Vin can only go as low as ~9.5V to meet the Vo=7.7V requirement. This device will work without an output capacitor.
TPS7A24 has a low enough dropout to meet Vo=7.7V at a Vin=8V, but it requires an output capacitor of at least 1uF which would not meet the capacitor requirement.
Is your customer using a competitor device which meets all the requirements? If so, could you share details of this device?
Please see the table below comparing our LDOs:
REG103GA-A/2K5 | LM317MDCYR | TPS7A2401DBVR | |
Generic Part Number | REG103 | LM317M | TPS7A24 |
Iout(Max)(A) | 0.5 | 0.5 | 0.2 |
Vin(Max)(V) | 15 | 40 | 18 |
Vin(Min)(V) | 2.7 | 3.75 | 2.4 |
Vout(Max)(V) | 5.5 | 37 | 17.75 |
Vout(Min)(V) | 1.3 | 1.2 | 1.24 |
Fixed Voltage(V) | ADJ | ADJ | ADJ |
PSRR @ 100 KHz(dB) |
20 | 22 | 22 |
Noise(uVrms) | 33 | 38 | 300 |
Accuracy(%) | 2 | 3 | 2 |
Dropout voltage (Vdo)(Typ)(mV) |
115 | 2000 | 160 |
Iq(Typ) (mA) |
1 | 5 | 0.002 |
Minimum Cap (uF) | 0 | 0 | 1 |
Thermal resistance θJA(°C/W) |
150 | 60 | 167.8 |
Operating temperature range(C) |
-40 to 85 | -40 to 125 | -40 to 125 |
Package | SOT-223|6 | SOT-223|4 | SOT-23|5 |
Comment | High dropout will not meet Vo=7.7V if Vin=8V. Meets 12V requirement. Does not need an output capacitor. | Low dropout will meet both output requirements. Needs an output capacitor of at least 1uF, which means it will not meet Cout requirement. |