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STBB2 Datasheet, PDF (8/25 Pages) STMicroelectronics – 800 mA 2.5 MHz, high efficiency dual mode buck-boost DC-DC converter
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Electrical characteristics
5
Electrical characteristics
STBB2
- 40 °C < TA < 85 °C, VIN = 3.6 V; VOUT = 3.4 V, VEN = VIN, VBP = 0 V; typical values are at
TA = 25 °C, unless otherwise specified.
Symbol
Table 6. Electrical characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
General section
VIN
Operating power input voltage
range
Shutdown mode
Pulse-skipping
Iq
PWM mode
Bypass mode
VUVLO Undervoltage lockout threshold
fSW
IOUT
Switching frequency
Continuous output current (1)
IPK Switch current limitation
PS to PWM transition
IPS-PWM
PWM to PS transition
Efficiency
h
(VIN = 3.6 V; VOUT = 3.4 V)
TON Turn-on time (2)
Thermal shutdown
TSHDN
Hysteresis
Output voltage
VOUT Output voltage range
VEN = 0 V
IOUT = 0 A, VMODE = 0
IOUT = 0 A, VMODE = VIN
VBP = VIN; IOUT = 0 A;
VMODE = 0, VIN = 2.4 to 5.5 V
VIN rising; VMODE = VIN;
IOUT = 100 mA
VIN falling; VMODE = VIN;
IOUT = 100 mA
2.5 V ≤ VIN ≤ 5.5 V
IOUT =1 0 mA (PS mode)
IOUT = 50 mA (PS mode)
IOUT = 150 mA (PWM)
IOUT = 250 mA (PWM)
IOUT = 500 mA (PWM)
IOUT = 800 mA (PWM)
VEN from low to high;
IOUT = 10 mA
2.4
5.5
V
0.5
2
µA
35
50 µA
8
10 mA
5
10 µA
2.1 2.35
V
1.8
2.1
2
2.5
3 MHz
800
mA
2.4
2.5
2.7
A
300
mA
280
85
90
90
%
91
92
92
260 300 µs
150
°C
20
°C
1.2
4.5
V
8/25
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