Ricoh RH5RH12B, RH5RH13B, RH5RH1A, RH5RH12B, RH5RH13B CONTENTS

RH5RH SERIES

APPLICATION MANUAL

CONTENTS

OUTLINE		......................................................................................................
OUTLINE																				1
FEATURES			....................................................................................................
FEATURES																				1
APPLICATIONS				.............................................................................................
APPLICATIONS																				1
BLOCK DIAGRAM					.........................................................................................
BLOCK DIAGRAM																				2
SELECTION GUIDE							.......................................................................................
SELECTION GUIDE																				2
PIN CONFIGURATION								...................................................................................
PIN CONFIGURATION																				3
PIN DESCRIPTION						........................................................................................
PIN DESCRIPTION																				3
ABSOLUTE MAXIMUM RATINGS																		...................................................................
ABSOLUTE MAXIMUM RATINGS																				4
ELECTRICAL CHARACTERITICS																		...................................................................
ELECTRICAL CHARACTERITICS																			...........................................	5
OPERATION OF STEP-UP DC/DC CONVERTER																			...........................................	10
															......................................................................					13
TYPICAL CHARACTERISTICS																				13
1)	Output Voltage vs. Output Current													.......................................................................						13
2)	Efficiency vs. Output Current									.............................................................................										14
3)	Supply Current (No Load) vs. Input Voltage ..............................................................15
4)	Output Current vs. Ripple Voltage												........................................................................							15
5)	Start-up/Hold-on Voltage vs. Output Current (Topt=25˚C) ...............................................16
6)	Output Voltage vs. Temperature											.........................................................................								17
6)	Output Voltage vs. Temperature												........................................................................							17
7)	Start-up Voltage vs. Temperature																			18
7)	Start-up Voltage vs. Temperature												........................................................................							18
8)	Hold-on Voltage vs. Temperature																			18
8)	Hold-on Voltage vs. Temperature													.......................................................................						18
9)	Supply Current 1 vs. Temperature																			18
9)	Supply Current 1 vs. Temperature													.......................................................................						18
10)	Supply Current 2 vs. Temperature																			18
10)	Supply Current 2 vs. Temperature																...................................................................			18
11)	Lx Switching Current vs. Temperature																			18
12)	Lx Leakage Current vs. Temperature															....................................................................				18
12)	Lx Leakage Current vs. Temperature															....................................................................				18
13)	Oscillator Frequency vs. Temperature																			19
13)	Oscillator Frequency vs. Temperature																...................................................................			19
14)	Oscillator Duty Cycle vs. Temperature																			19
15)	Vlx Voltage Limit vs. Temperature												........................................................................							20
15)	Vlx Voltage Limit vs. Temperature																	................................................................		20
16)																				20
16)	EXT “H” Output Current vs. Temperature																			20
17)																		.................................................................		20
17)	EXT “L” Output Current vs. Temperature																			20
18)	Load Transient Response								................................................................................											21
18)	Load Transient Response										............................................................................									21
19)	Distribution of Output Voltage																			22
19)	Distribution of Output Voltage														......................................................................					22
20)	Distribution of Oscillator Frequency																			22
20)	Distribution of Oscillator Frequency																			22