Symbol | Parameter | Test conditions | Min. | Typ. | Max. | Unit |
Vcc | Operating input voltage range | Vo =1.235 V;lo=2 A | 8 | | 36 | V |
RDs(on) | MOSFET on resistance | | | 0.250 | 0.5 | Q |
| Maximum limiting current | Vcc =8.5 V(1) | 1.8 | 2.5 | 3.2 | A |
Vcc =8.5 V,TJ=25℃ | 2 | 2.5 | 3.2 |
fsw | Switching frequency | | 212 | 250 | 280 | kHz |
| Duty cycle | | 0 | | 100 | % |
Dynamic characteristics (see test circuit) |
V5 | Voltage feedback | 8V<Vcc<36V;20mA<l o< 1A | 1.198 | 1.235 | 1.272 | V |
n | Eficiency | V o=5V ,V cc= 12V | | 90 | | % |
DC characteristics |
Iqop | Total operating quiescent
current | | | 3 | 5 | mA |
Iq | Quiescent current | Duty cycle =0; VFB =1.5V | | | 2.7 | mA |
Error amplifier |
VoH | High level output voltage | VFB=1V | 3.6 | | | V |
VoL | Low level output voltage | VFB =1.5V | | | 0.4 | V |
lo source | Source output current | VcoM p= 1.9V;V FB= 1V | 160 | 300 | | μA |
lo sink | Sink output current | VcOM p =1.9 V; VFB= 1.5V | 1 | 1.5 | | mA |
Ib | Source bias current | | | 2.5 | 4 | μA |
| DC open loop gain | RL=… | 50 | 58 | | dB |
gm | Transconductance | I cOMp=-0.1 mA to 0.1 mA;
VcOMp =1.9 V | | 2.3 | | mS |
VoFFS | Input offset voltage | Vcs-=1.8 V;Vcs +=V co mp | 90 | 100 | 110 | mV |
Ics+ | CS+ output current | lo =1 A; RSENSE= 100 mQ;
VouT<Vcc-2V | | 1.5 | 3 | μA |
Ics- | CS- output current | lo =1 A; RSENSE = 100 mQ;
Vour<Vcc-2V | | 1.5 | 3 | μA |
Reference section |
| Reference voltage | IREF = 0 to 5 mA;Vcc=8Vto 36V | 3.2 | 3.3 | 3.399 | V |
| Line regulation | IREF=0mA;V cc=8V to 36V | | 5 | 10 | mV |
| Load regulation | IREF = 0 to 5 mA | | 8 | 15 | mV |
| Short circuit current | | 5 | 18 | 35 | mA |