JAJSHW4 September 2019 LM74202-Q1
PRODUCTION DATA.
PARAMETER | TEST CONDITIONS | MIN | NOM | MAX | UNIT | |
---|---|---|---|---|---|---|
UVLO INPUT | ||||||
UVLO Turn On Delay | UVLO_tON(dly) | UVLO↑ (100mV above V(UVLOR)) to V(OUT) = 100mV, C(dvdt) = Open | 80 | µs | ||
UVLO_tON(dly) | UVLO↑ (100mV above V(UVLOR)) to V(OUT) = 100mV, C(dvdt) ≥ 10 nF, [C(dvdt) in nF] | 80+14.5 x C(dvdt) | ||||
UVLO Turn-Off delay | UVLO_toff(dly) | UVLO↓ (100mV below V(UVLOF)) to FLT ↓ | 9 | µs | ||
SHUTDOWN INPUT | ||||||
SHUTDOWN Exit delay | SHDN_ton(dly) | SHDN ↑ (above V(SHUTR) to V(OUT) = 100mV, C(dvdt) ≥ 10 nF, [C(dvdt) in nF] | 350+14.5 x C(dvdt) | µs | ||
SHDN_ton(dly) | SHDN ↑ (above V(SHUTR) to V(OUT) = 100mV, C(dvdt)= Open | 355 | ||||
SHUTDOWN Entry delay | SHDN_toff(dly) | SHDN ↓ (below V(SHUTF) to FLT ↓ | 10 | µs | ||
OVP INPUT | ||||||
OVP Exit delay | tOVP(dly) | OVP ↓(20mV below V(OVPF)) to V(OUT) = 100mV | 205 | µs | ||
OVP Disable delay | tOVP(dly) | OVP↑ (20mV above V(OVPR)) to FLT ↓ | 2 | µs | ||
CURRENT LIMIT | ||||||
Fast-Trip Comparator Delay | tFASTTRIP(dly) | I(OUT) = 1.5x I(FASTRIP) | 170 | ns | ||
REVERSE CURRENT BLOCKING COMPARATOR | ||||||
RCB comparator delay | tREV(dly) | (V(IN)-V(OUT)) ↓ (100mV overdrive below V(REVTH)) to internal FET OFF | 1.29 | µs | ||
(V(IN)-V(OUT)) ↓ (10mV overdrive below V(REVTH)) to FLT ↓ | 40 | µs | ||||
tFWD(dly) | (V(IN)-V(OUT)) ↑ (10mV overdrive above V(FWDTH)) to FLT ↑ | 60 | µs | |||
THERMAL SHUTDOWN | ||||||
Retry Delay in TSD | tretry | 540 | ms | |||
OUTPUT RAMP TIME | ||||||
Output Ramp Time | tdVdT | SHDN↑ to V(OUT) = V(IN) | 1.6 | ms | ||
SHDN↑ to V(OUT) = V(IN), with C(dVdT) = 47nF | 10 | ms | ||||
FAULT FLAG | ||||||
FLT assertion delay in circuit breaker mode | tCB(dly) | MODE = OPEN,Delay from I(out)>I(lim) to FLT ↓(and internal FET turned off) | 4 | ms | ||
Retry Delay in circuit breaker mode | tCBretry(dly) | MODE= OPEN, C(dVdT) = Open. I(out)>I(lim). Delay from FLT ↓ to V(dVdT) = 50mV (Rising) | 540 | ms | ||
PGOOD delay time | tPGOODR | Delay for rising FLT edge | 1.8 | ms | ||
tPGOODF | Delay for falling FLT edge | 900 | µs |