NJU7690 Datasheet, PDF (1/9 Pages) New Japan Radio – High Efficiency Synchronous Step-Down switching regulator IC

NJU7690
High Efficiency Synchronous Step-Down switching regulator IC
■ GENERAL DESCRIPTION
The NJU7690 is a high efficiency synchronous step-down
switching regulator control IC. It offers high efficiency power supply
circuits in applications by synchronous rectification. The NJU7690
also has a soft-start function, dead time control and timer latch for
short circuit protection and their times are all adjustable with
external parts. It is available in a small and thin 10-lead MSOP
(TVSP) package. It is suitable for battery powered applications.
■ PACKAGE OUTLINE
NJU7690RB2
(MSOP10 (TVSP10))
■ FEATURES
● Synchronous Rectification
● PWM switching control
● Standby Function
● Operating Voltage
2.2V to 8V
● Wide Oscillator Range 300kHz to 1MHz
● Maximum Duty Cycle 100%
● Quiescent Current
Operating :800µA typ.
Standby :1µA max.
● Soft-Start Function
Internal : 16ms typ. or adjustable
● Dead Time Control
● Timer Latch for Short Circuit Protection
● C-MOS Technology
● Package Outline
NJU7690RB2 : TVSP10
■ PRODUCT VARIATION
NJU7690
Synchronous
rectification
NJU7631
PWM/PFM
Light Load to
Efficiency
NJU7630
PWM Control
■ PIN CONFIGURATION
1
2
3
4
5
10
9
8
7
6
NJU7690RB2
PIN FUNCTION
1. OUTP
2. V⁺
3. FB
4. IN-
5. SCP
6. ON/OFF
7. DTC
8. RT
9. GND
10. OUTN
Ver.2012-08-03
-1-