STBB1-AXX Datasheet, PDF (9/24 Pages) STMicroelectronics – Buck-boost DC-DC converter

STBB1-AXX
Electrical characteristics
5
Electrical characteristics
V_IN = V_INA = V_EN = 3.6 V, C_IN = 10 µF, C_OUT = 10 µF, L = 2.2 µH, T_J = - 40 to 85 °C (unless
otherwise specified; typical values are referred to T_A = 25 °C).
Symbol
Parameter
Table 6: Electrical characteristics
Test conditions
Min.
VIN
VUVLO
Input voltage range
Undervoltage lockout
threshold
VINA rising
VINA falling
2.0
1.50
485
VFB
Feedback voltage
TJ = 25 °C
490
VOUT
ZFB
IQ
IQ
IQSHDN
freq
VEN
Output voltage range
FB input impedance
No switching quiescent
current (VIN+VINA) (see
Figure 3: "Application circuit
(adjustable output version)", )
Operating quiescent current
(VIN+VINA)
Shutdown quiescent current
FB = 0.7 V, VMODE = 0 V
FB = 0.7 V, VMODE = VIN
IOUT = 0 A, VOUT = 3.3 V,
VMODE = 0 V
IOUT = 0 A, VOUT = 3.3 V,
VMODE = VIN
VEN = 0 V, VIN = 3.6 V
Oscillator frequency
Frequency range for
synchronization
Enable input logic low
TA = 25 °C
VIN = 2.2 V to 5.5 V
Enable input logic high
VIN = 2.2 V to 5.5 V
1.2
1300
1300
1.2
IEN
Enable pin current
VEN = 5.5 V
MODE/SYNC input logic low VIN = 2.2 V to 5.5 V
VMODE/SYNC
MODE/SYNC input logic high VIN = 2.2 V to 5.5 V
1.2
IMODE/SYNC MODE/SYNC pin current
%VOUT
Line regulation
%VOUT
Load regulation
VMODE/SYNC = 5.5 V
2.2 V < VIN < 5.5 V;
IOUT = 1 mA
10 mA < IOUT < 1000 mA
ISWL
Switch current limitation
VIN = 3.3 V
1.6
Typ.
1.70
1.60
500
500
10
160
600
200
3.4
0.1
1500
0.01
0.01
0.5
1
2.3
Max. Unit
5.5 V
1.80
V
515 mV
510 mV
5.5 V
MΩ
250
µA
750
µA
5.0 mA
1
µA
1750
kHz
2000
0.4
V
1
µA
0.4
V
1
µA
%
%
2.6 A
DocID022197 Rev 4
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