TON |
Turn-on time (time for output to reach 0V→90% × 3.4 V) |
VBATT = 3.8 V, VIO = 1.8 V, RFFE write VSET = 3.42 V (VSET_CTRL = 5Fh), IOUT = 0mA |
|
35 |
50 |
µs |
EN = L to H, VBATT = 3.8 V, VCON = 1.14 V, IOUT = 0 mA |
IOUT_MAX |
Max output current |
VBATT ≥ 3 V, VOUT = 3.8 V |
750 |
|
|
mA |
VBATT ≥ 3.2 V, VOUT = 4.2 V |
650 |
|
|
DMAX |
Maximum duty cycle |
Boost (% M4 on) |
|
|
50% |
|
Buck (% M1 on) |
|
|
100% |
FOSC_PFM |
Internal oscillator frequency |
PFM: VOUT = 0.6V, PVIN = 3.7 V IOUT = 13 mA |
|
63 |
|
kHz |
CL |
Load capacitance |
Half speed readback SCLK = 13 MHz, not including LM3279 capacitance. TA = 25°C |
10 |
|
50 |
pF |
CVCON |
VCON input capacitance |
VCON = 1V, Test frequency = 100 kHz, TA = 25°C |
|
|
10 |
pF |
VCON_LIN |
VCON linearity |
0.167 V ≤ VCON ≤ 1.4 V |
–2.5% |
|
2.5% |
|
VIO |
VIO I/O voltage level |
1.8V Bus, TA = 25°C |
1.65 |
1.8 |
1.95 |
V |
VO_RIPPLE |
Ripple voltage |
VBATT ≥ 3.2 V, 0.6 ≤ VOUT ≤ 4.2 V, 0 mA ≤ IOUT ≤ 430 mA, TA = 25°C |
|
15 |
50 |
mV |
PFM ripple |
VOUT = 0.6 V, IOUT = 5mA |
|
40 |
|
Ripple voltage in mode transition |
VBATT = 3 V to 5 V, Tr = Tf = 30s 3.3 V ≤ VOUT ≤ 4.2 V |
|
|
50 |
ΔVOUT |
Line regulation |
VBATT = 3.2 V to 4.9 V, VOUT = 3.5 V, PWM Operation |
|
|
10 |
mV |
Load regulation |
IOUT = 0 mA to 500 mA, VBATT = 3.2 V to 4.9 V, PWM Operation |
|
|
20 |
Line_tr |
Line transient response |
VBATT = 3.6 V to 4.2 V, Tr = Tf = 10 µs, VOUT = 3.5 V, RLOAD = 11.4 Ω, PWM |
–100 |
|
100 |
mV |
VBATT = 3.6 V to 4.2 V, Tr = Tf = 10 µs, VOUT = 0.8 V, RLOAD = 20 Ω, PFM |
–5 |
|
5 |
Load_tr |
Load transient response |
IOUT = 1 mA to 200 mA, Tr = Tf = 1 µs, VBATT = 4.2 V, VOUT = 3.5 V, PWM |
–100 |
|
100 |
mV |
IOUT = 10 mA to 90 mA, Tr = Tf = 1 µs, VBATT = 4.2 V, VOUT = 0.8 V, PFM |
–10 |
|
10 |
VOUT_TR |
VOUT transient response overshoot |
VBATT = 3.2 V to 4.2 V, VOUT = 1.6 V to 3.4 V, Tr = Tf = 1 µs,
RLOAD = 5 Ω |
|
200 |
|
mV |
VOUT transient response rise time |
|
|
20 |
µs |
VOUT transient response fall time |
|
|
50 |
η |
Efficiency |
VBATT = 3 V, VOUT = 1.9 V, IOUT = 20 mA (PWM) |
|
77% |
|
|
VBATT = 3 V, VOUT = 2.41 V, IOUT = 60 mA (PWM) |
|
91% |
|
VBATT = 3 V, VOUT = 2.71 V, IOUT = 200 mA (PWM) |
|
94% |
|
VBATT = 3 V, VOUT = 3.31 V, IOUT = 480 mA (PWM) |
|
93% |
|
VBATT = 3.8 V, VOUT = 0.60 V, IOUT = 10 mA (PFM) |
|
57% |
|
VBATT = 3.8 V, VOUT = 1 V, IOUT = 20 mA (PFM) |
|
75% |
|
VBATT = 3.8 V, VOUT = 1.9 V, IOUT = 20 mA (PWM) |
|
68% |
|
VBATT = 3.8 V, VOUT = 2.41 V, IOUT = 70 mA (PWM) |
|
88% |
|
VBATT = 3.8 V, VOUT = 2.71 V, IOUT = 200 mA (PWM) |
|
94% |
|
VBATT = 3.8 V, VOUT = 3.31 V, IOUT = 480 mA (PWM) |
|
94% |
|
VBATT = 3 V, VOUT = 3.6 V, IOUT = 200 mA (PWM) |
|
94% |
|
TS |
Data setup time |
TA = 25°C |
1 |
|
|
ns |
TH |
Data hold time |
5 |
|
|
TSDATAOTR |
SDATA output transition time (rise/fall time) |
VIO range = 1.65 V to 1.95 V, TA = 25°C |
2.1 |
|
6.5 |