STBB3JCC Datasheet, PDF (8/27 Pages) STMicroelectronics – 2 A, high efficiency single inductor buck-boost DC-DC converter and high brightness WLED driver

Electrical characteristics
5
Electrical characteristics
STBB3JCC
V_IN = V_INA = V_EN = 3.6 V, V_OUT = 3.3 V, C_IN = 4x10 μF, C_OUT = 4 x 10 μF, C_INA = 100 nF,
L1= 1.5 μH, T_A = - 40 °C to 85 °C (unless otherwise specified; typical values are referred to
T_A = 25 °C).
Symbol
Table 6. Electrical characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
General section
Input voltage range
1.8
5.5 V
V_IN
Minimum input voltage
for the startup
I_OUT = 600 mA, mode = V_IN
1.8 1.9 V
V_UVLO
I_q
I_SHDN
V_FB
f_SW
Undervoltage lockout
threshold
V_INA rising, I_OUT = 100 mA
MODE = V_IN;
V_INA falling; I_OUT = 100 mA
V_MODE = V_IN
Quiescent current V_IN
and V_INA
I_OUT = 0 A V_MODE = GND
Shutdown current
V_EN = GND
Feedback voltage
V_IN from 1.8 to 5.5 V
Switching frequency
T_A = 25 °C
Frequency range for
external synchronization
1.5 1.6
1.4 1.5
0.1
90 100
1.8
2
1.6
1.7
V
1.6
50 µA
1
µA
110 mV
2.2
MHz
2.4
I_OUT
Continuous output
current⁽¹⁾
V_IN from 1.8 to 5.5 V
600
mA
I_SWL
I_PK
I_PS-PWM
Switch current limitation T_A = 25 °C
Switch current limitation
PS to PWM transition
PWM to PS transition
2.8
3
3.65 A
2.3 2.5 2.7 A
730
mA
680
Output voltage
V_OUT Output voltage range
%Δ_OUT
Maximum load
regulation
1.2
V_IN = 2.5 to 5.5 V,
-1.5
V_MODE = V_IN
V_IN = 2.5 to 5.5 V, V_MODE =
GND suitable output current -3
to keep PS operation
5.5 V
+1.5 %
+3 %
%V_OUT
Maximum load
regulation
I_LOAD = from 10 mA to 800
mA
± 0.5
%
V_OPP-PS
Peak-to-peak ripple in
PS mode
I_OUT = 100 mA
100
mV
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