L6730B STMicroelectronics, L6730B Datasheet - Page 15

• Manufacturer Part Number: L6730B
• Description: IC CTRLR ADJ STPDN SYNC 20-TSSOP
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6730B

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adj to 0.6V
• Frequency - Switching: 100kHz ~ 1MHz
• Voltage - Input: 1.8 ~ 14 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Output Voltage: 0.6 V
• Input Voltage: 1.8 V to 14 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package: HTSSOP20
• For Use With: 497-5868 - EVAL BOARD 30A 400KHZ L6730497-5501 - EVAL BOARD FOR L6730XX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L6730 - L6730B
5.2
5.3
Internal LDO
An internal LDO supplies the internal circuitry of the device. The input of this stage is the
V
Figure 5.
Bypassing the LDO to avoid the voltage drop with low Vcc
The LDO can be by passed by providing 5 V voltage directly to V
V
at least 1 μF capacitor to sustain the internal LDO during the recharge of the bootstrap
capacitor. V
CC/O/U pin (L6730B) and PGOOD pin (see
If Vcc
The maximum LDO output current is about 100 mA, and so the output voltage drop can be
100 mV. The LDO can be bypassed to avoid this.
CC
CCDR
4.5V÷14V
pin and the output (5 V) is the V
≈
pins must be shorted together as shown in
5 V the internal LDO works in dropout with an output resistance of about 1 Ω.
CCDR
LDO block diagram
also represents a voltage reference for Tmask pin, S/O/U pin (L6730) or
LDO
Doc ID 11938 Rev 3
CCDR
pin (see
Table 4: Pin
Figure 6.
Figure
connection).
5).
V
CCDR
CCDR
pin must be filtered with
. In this case Vcc and
Device description
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