BD95500MUV Datasheet, PDF (6/21 Pages) Rohm – Switching Regulator with MOSFET for DDR-SDRAM Cores

BD95500MUV
●Reference Data
VIN
HG/LG
VIN
HG/LG
Technical Note
EN
SS
VOUT
VOUT
Fig.25 VIN change
(5→19V)
VOUT
Fig.26 VIN change
(19→5V)
PGOOD
Fig.27 EN wake up
1.52
Continuous
1.51
SLLM
1.50
1.49
1.48
0.001
0.01
0.1
1
10
Iout [A]
Fig.28 IOUT vs VOUT
500
400
Continuous
300
Continuous
200
SLLM
SLLM
100
0
0.001
0.01
0.1
1
10
Iout [A]
Fig.29 IOUT vs f
60
50
40
30
20
10
0
0
1
2
3
4
5
6
Io [A]
Fig.30 IOUT vs ΔTc
●Block Diagram
VDD
VIN
EN
39
Vcc
REF
10
1
PGOOD
V OUT
11
Vcc
5
Reference
Block
VREG
VIN
VINS
37
VREG
7
UVLO
2.5V
2.5VReg
REF × 0.85
SS × 0.85
V OUT
SCP
Delay
Power
Good
SS
H³ Reg ^TM
Controller
Block
REF × 1.2
V OUT
R
Q
S
SS
9
OVP
SS
Soft Start
VDD
SLLM/
MODE
Driver
Circuit
EN/UVLO
Thermal
TSD
Protection
UVLO
ILIM
SCP
TSD
Current
ILIM ^Limit
× 0.1
BOOT
38
31 VIN
|
36
C IN
3.3V ～
20V
22 _SW
|
29
14
VDD
5V
V OUT
C OUT
15 _PGND
|
21
30
PGND
3
CE
6
GND
8
FS
40
2
4
MODE
N.C.
ILIM
13
12
Is+
Is -
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
6/20
2010.05 - Rev.C