ST1S12XX(2008) Ver la hoja de datos (PDF) - STMicroelectronics

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ST1S12XX
(Rev.:2008)

Synchronous rectification with enable, 0.7 A, 1.7 MHz fixed or adjustable step-down switching regulator in TSOT23-5L

STMicroelectronics 

ST1S12xx

Electrical characteristics

Table 7.

Symbol

Electrical characteristics for ST1S12G12

VIN =VEN = 3 V, CIN = 4.7 µF, CO =10 µF, L = 2.2 µH, TJ = -40 to 125 °C (unless otherwise

specified. Typical values are referred to 25 °C)

Parameter

Test conditions

Min. Typ. Max. Unit

OUT

IO

VIN

Output feedback pin

VO pin bias current

Minimum input voltage

IQ

Quiescent current

IO

Output current

VEN Enable threshold

TJ =-40 to 125°C

IO= 10mA to 0.7A

VIN =VEN, VFB=1.5V

VEN = 0, T = -40°C to 85°C

VIN = 2.5 to 5.5V Note 1

Device ON, VIN = 2.5 to 5.5V

Device OFF

IEN Enable pin current

%VO/ΔVIN Reference line regulation

%VO/ΔIO Reference load regulation

PWMfS PWM switching frequency

RDSON-N NMOS switch on resistance

RDSON-P PMOS switch on resistance

ISWL Switching current limitation

ν

Efficiency Note 1

TSHDN

THYS

Thermal shutdown

Thermal shutdown hysteresis

%VO/ΔIO Load transient response

%VO/ΔIO

Short circuit removal

response

VIN = 2.5V to 5.5V Note 1

IO = 10mA to 700mA Note 1

ISW = 100 mA

ISW = 100 mA

Note 1

IO = 10mA to 100mA

IO = 100mA to 0.7A

IO = 100mA to 700mA, TA = 25°C

tR = tF ≥ 200ns, CO=22µF Note 1

IO = 10mA to IO=short, TA = 25°C

Note 1

1.164

2.5

0.7

1.5

1.16

130

-5

-10

1.2 1.236

V

15 20

µA

V

500 600

µA

1

µA

A

V

0.5

1

µA

0.05 0.1 %VO/ΔVIN

0.0025 0.005 %VO/mA

1.7 2.08 MHz

0.25 0.4

Ω

0.25 0.45

Ω

1.6

A

80

%

85

150

°C

15

°C

+5

%VO

+10 %VO

Note: 1 Guaranteed by design, but not tested in production.

7/20

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