L6926 STMicroelectronics, L6926 Datasheet - Page 3

• Manufacturer Part Number: L6926
• Description: IC REG HE SYNC STEP DOWN 8-MSOP
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6926

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.6 ~ 5.5 V
• Current - Output: 800mA
• Frequency - Switching: 600kHz
• Voltage - Input: 2 ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Power - Output: 450mW
• Mounting Style: SMD/SMT
• High Efficiency: up to 95%
• Low Drop-out Operation: up to 100% duty cycle
• For Use With: 497-4737 - BOARD EVAL L6926 STEP DOWN REG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6926
1
Pin settings
Figure 2.
Table 1.
Pin n°
1
2
3
4
5
6
7
8
PGOOD
COMP
SYNC
Name
GND
RUN
VFB
V
Pin connection (top view)
Pin description
LX
CC
Shutdown input. When connected to a low level (lower than 0.4 V) the device
stops working. When high (higher than 1.3 V) the device is enabled.
Error amplifier output. A compensation network has to be connected to this pin.
Usually a 220 pF capacitor is enough to guarantee the loop stability.
Error amplifier inverting input. The output voltage can be adjusted from 0.6 V up
to the input voltage by connecting this pin to an external resistor divider.
Ground.
Switch output node. This pin is internally connected to the drain of the internal
switches.
Input voltage. The start up input voltage is 2.2 V (typ) while the operating input
voltage range is from 2 V to 5.5 V. An internal UVLO circuit realizes a 100 mV
(typ.) hysteresis.
Operating mode selector input. When high (higher than 1.3 V) the Low
Consumption Mode is selected. When low (lower than 0.5 V) the low noise
mode is selected. If connected with an appropriate external synchronization
signal (from 500 kHz up to 1.4 MHz) the internal synchronization circuit is
activated and the device works at the same switching frequency.
Power good comparator output. It is an open drain output. A pull-up resistor
should be connected between PGOOD and V
requirements). The pin is forced low when the output voltage is lower than 90%
of the regulated output voltage and goes high when the output voltage is greater
than 90% of the regulated output voltage. If not used the pin can be left floating.
COMP
GND
RUN
VFB
Doc ID 9302 Rev 9
1
2
3
4
D01IN1239AMOD
Description
8
7
6
5
PGOOD
SYNC
V
LX
CC
OUT
(or V
CC
depending on the
Pin settings
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