R1243S001B-FE

Brand: Ricoh
Product Code: R1243S001x-FE
Availability: 649

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R1243x Series (30V Input 2A Buck DC/DC Converter)

Datasheet
Flyer
Operating Voltage	4.5V ~ 30V
Stand-by function	Typ. 0μA, Max. 10μA (VIN =30V, CE="L")
Supply Current	Typ. 0.7mA (VIN=30V VFB=1.0V)
Output Voltage Range	0.8V ~ 18V (Adjustable with external resistor)
Feed Back Voltage	0.5V with 1.4% accuracy
Output Current	Max. 2A
Peak Current Limit Function	Typ. 3.8A
Internal Nch MOSFET Driver	Typ. 175mΩ
Maximum Duty Cycle	Min. 85%
Operating Frequency	Ver.A/B 1000kHz, Ver.C/D 330kHz
Short protection delay time for Output Latch	Typ. 2ms : Ver.A/C
Built-in Foldback Protection and its Frequency	1/4 frequency at fold condition : Ver.B/D Ver.B 250kHz, Ver.D 82.5kHz
Internal Soft Start Time	Typ. 0.4ms, with TSS pin open
External Soft Start Time	Typ. 12ms, with CSS=0.1μF
Flag Output Function	Typ. 0.25ms, FLG “OFF” delay time
UVLO Released Voltage	Typ. 4.0V
Thermal Shutdown Function	Typ. 160°C, with 35°C hysteresis
Package	HSOP-8E
Ordering Format	R1243S001x-FE

Delivery Time
Lead-Time	In stock: ~3 weeks, Factory LT: 10 weeks
Item Characteristics
Version	001B/D
Control	PWM
Frequency	1MHz (A/B/E)
Input Voltage	4.5V to 30.0V
Output Current	2A
Output Voltage	Ext. adjustable between 0.8V to 18.0V
Vfb Voltage Accuracy	± 7mV
Type	Fold-back, Diode Rectifier
Package	HSOP-8E