STBB3J Datasheet, PDF (8/25 Pages) STMicroelectronics – 2 A, high efficiency single inductor buck-boost DC-DC converter

Electrical characteristics
5
Electrical characteristics
STBB3J
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,
L = 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
V_{IN Minimum input voltage for the}
startup
I_OUT = 600 mA, mode = V_IN
V_INA rising, I_OUT = 100 mA
MODE = V_IN;
1.5
V_UVLO Undervoltage lockout threshold
V_INA falling; I_OUT = 100 mA
V_MODE = V_IN;
1.4
I_q
Quiescent current V_IN and V_INA I_OUT = 0 A V_MODE = GND
I_SHDN Shutdown current
V_EN = GND
V_FB Feedback voltage
V_IN from 1.8 to 5.5 V
490
Switching frequency
T_A = 25 °C
1.8
f_{SW Frequency range for external}
synchronization
1.6
I_OUT Continuous output current ⁽¹⁾
V_IN from 1.8 to 5.5 V
600
I_SWL Switch current limitation
T_A = 25 °C
2.8
I_PK Switch current limitation
2.3
PS to PWM transition
I_PS-PWM
PWM to PS transition
Output voltage
V_OUT Output voltage range
%Δ_OUT Maximum load regulation
1.2
V_IN = 2.5 to 5.5 V, V_MODE = V_IN -1.5
V_IN = 2.5 to 5.5 V, V_MODE = GND
suitable output current to keep
-3
PS operation
%V_OUT Maximum load regulation
V_OPP-PS Peak-to-peak ripple in PS mode
I_LKFB FB pin leakage current
I_LOAD = from 10 mA to 800 mA
I_OUT = 100 mA
V_FB = 5.5 V
Control stage
V_IL
Low-level input voltage (EN,
MODE pins)
1.8
1.6
1.5
0.1
500
2
3
2.5
730
680
± 0.5
100
5.5
V
1.9
V
1.7
V
1.6
50 µA
1
µA
510 mV
2.2
MHz
2.4
mA
3.65 A
2.7
A
mA
5.5
V
+1.5 %
+3
%
%
mV
9
µA
0.4
V
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DocID025263 Rev 5