Electrical Characteristics:Vin=12V,Vour=1.2V,VBsT-Vsw=5V;TA=25°C,unless noted.Bold values indicate
-40°C≤TJ≤+125°C.( Note 1). |
| Parameters | Min. | Typ. | Max. | Units | Conditions |
| Power Supply Input |
Input Voltage Range (Viw)
( Note 2) | 4.5 | 一 | 5.5 |
V | VDD =VIN |
| 4.5 | | 28 | |
Quiescent Supply Current
(MIC2125) | —— | 340 | 750 | μA | VFR =1.5V |
Quiescent Supply Current
(MIC2126) | —— | 1.1 | 3 | mA | VFB=1.5V |
| Shutdown Supply Current | — | 0.1 | 5 | μA | SW unconnected,VEN =0V |
| Vpp Supply |
| Vpp Output Voltage | 4.8 | 5.2 | 5.4 |
V | Vin=7V to 28V,Ibp=10 mA |
| Vpp UVLO Threshold | 3.7 | 4.2 | 4.5 | Vpp rising |
| Vpp UVLO Hysteresis | | 400 | | mV | |
| Load Regulation | 0.6 | 2 | 3.6 | % | lpp =0 to 40 mA |
| Reference |
Feedback Reference Voltage | 0.597 | 0.6 | 0.603 |
V | TJ=25°℃(±0.5%) |
| 0.594 | 0.6 | 0.606 | -40°C≤T」≤+125℃(±1%) |
| FB Bias Current | | 0.01 | 0.5 | μA | VFB=0.6V |
| Enable Control |
| EN Logic Level High | 1.6 | | — | V | |
| EN Logic Level Low | | | 0.6 | |
| EN Hysteresis | | 120 | | mV | |
| EN Bias Current | | 6 | 30 | μA | VEN =12V |
| Oscillator |
Switching Frequency | | 750 | |
kHz | VFREQ =VIN |
| 375 | | VFREQ=50%xVIN |
| Maximum Duty Cycle | | 85 | |
% | |
| Minimum Duty Cycle | | 0 | | VFR>0.6V |
| Minimum On-Time | | 100 | | NS | |
| Minimum Off-Time | 150 | 220 | 300 | |
| Soft-Start |
| Soft-Start Time | | 7 | | Ms | |
| Short-Circuit Protection and OVP |
Current-Limit Comparator
Offset | -15 | -4 | 7 | mV | VER =0.6V |
| Current-Limit Source Current | 32 | 36 | 40 | μA | VEp =0.6V |
已绑定手机
已实名认证
发表于 2023-11-2 19:28
