TB7100F Datasheet, PDF (1/17 Pages) Toshiba Semiconductor – Step-down DC-DC Converter IC

Toshiba BiCD Integrated Circuit Silicon Monolithic
TB7100F
Step-down DC-DC Converter IC
The TB7100F is a single-chip step-down DC-DC converter IC.
Equipped with a built-in high-speed and low on-resistance power
MOSFET, and utilizing a chopper circuit, this IC can achieve a high
efficiency in a wide load current range.
TB7100F
Features
• Capable of high current drive (I_OUT = maximum of 700 mA),
using only a few external components
• High efficiency (η = 90% or higher) (@V_IN = 5V, V_OUT = 3.3V,
and I_OUT = 300 mA).
SON8-P-0303-0.65A(PS-8)
Weight: 0.016 g (Typ.)
• Operating voltage (V_IN) range: 3 to 5.5 V
• Low on-resistance (R_DS(ON)): 0.27 Ω (typ.) if V_IN = 5 V
• High oscillation frequency of 550 kHz (typ.), making it possible to use small external components.
• Uses external phase compensation, assuring a high degree of design freedom in selecting external components and
determining a loop response.
• Employs a current mode architecture with excellent fast load response.
• A small surface mount-type ceramic capacitor can be used as an output smoothing capacitor.
• Housed in a small surface-mount package (PS-8) with a low thermal resistance.
Pin Assignment
COMP 1
R_T 2
PGND 3
SGND 4
8 FB
7 ENB
6 V_IN
5 SW
Marking
7100
※
Part number
・The dot (•) on the top surface indicates pin 1.
*: Lot number
Due to its MOS structure, this product is sensitive to electrostatic discharge. Handle with care.
1
2004-09-10