參數(shù)資料
型號： RT9210
廠商： Richtek Technology Corporation
英文描述： Dual 5V Synchronous Buck DC-DC PWM Controller for DDR Memory VDDQ and VTT Termination
中文描述： 雙5V的同步降壓型DC - DC PWM控制器，用于DDR內(nèi)存VDDQ和VTT終端
文件頁數(shù)： 6/17頁
文件大小： 360K
代理商： RT9210
RT9210
Preliminary
DS9210-05 March 2007
6
www.richtek.com
Absolute Maximum Ratings
(Note 1)
z
Supply Voltage, V
CC
-------------------------------------------------------------------------------------------------- 7V
z
BOOT, V
BOOT
- V
PHASE
------------------------------------------------------------------------------------------------7V
z
Input, Output or I/O Voltage----------------------------------------------------------------------------------------- GND-0.3V to 7V
z
Package Thermal Resistance
TSSOP-24,
θ
JA
--------------------------------------------------------------------------------------------------------- 100
°
C/W
SOP-24,
θ
JA
------------------------------------------------------------------------------------------------------------ 90
°
C/W
z
Junction Temperature------------------------------------------------------------------------------------------------- 150°C
z
Lead Temperature (Soldering, 10 sec.)--------------------------------------------------------------------------- 260°C
z
Storage Temperature Range ----------------------------------------------------------------------------------------
65°C to 150°C
z
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 2kV
MM (Machine Mode)-------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 3)
Electrical Characteristics
(V
CC
= 5V, T
A
= 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
V
CC
Supply Current
Nominal Supply Current
I
CC
OCSET/SD = V
CC
, UGATE1 & 2
LGATE1 & 2 Open
--
5
--
mA
Shutdown Supply
I
CCSD
OCSET/SD = 0V
--
3
--
mA
Power-On Reset
POR Threshold
V
CCRTH
V
OCSET/SD
= 4.5V, V
CC
Rising
3.7
4.1
4.5
V
Hysteresis
V
CCHYS
V
OCSET/SD
= 4.5V
--
0.5
--
V
Reference (for V1 and V2 Error Amp)
Reference Voltage
(V2 Error Amp Reference)
V1 Error Amp Reference Voltage
Tolerance
Error Amp Reference
V
REF2
Sense1 = 2.5V
49.0
50.0
51.0
%
Sense1
Δ
V
1EAR
--
--
2
%
V
REF
V
CC
= 5V
0.784
0.8
0.816
V
Oscillator
Free Running Frequency
f
OSC
V
CC
= 5V
275
300
325
kHz
Ramp Amplitude
Δ
V
OSC
--
1.9
--
V
P-P
Error Amplifier
DC Gain
--
90
--
dB
Gain-Bandwidth Product
GBW
--
10
--
MHz
Slew Rate
SR
COMP = 10pF
--
6
--
V/
μ
s
To be continued
z
Supply Voltage, V
CC
-------------------------------------------------------------------------------------------------- 5V
±
5%
z
Ambient Temperature Range---------------------------------------------------------------------------------------- 0
°
C to 70
°
C
z
Junction Temperature Range---------------------------------------------------------------------------------------- 0
°
C to 125
°
C
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