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US3010のメーカーはUNISEMです、この部品の機能は「5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC」です。 |
部品番号 | US3010 |
| |
部品説明 | 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC | ||
メーカ | UNISEM | ||
ロゴ | |||
このページの下部にプレビューとUS3010ダウンロード(pdfファイル)リンクがあります。 Total 11 pages
US3010/3010A
5 BIT PROGRAMMABLE SYNCHRONOUS BUCK
FEATURES
CONTROLLER IC
PRELIMINARY DATASHEET
DESCRIPTION
Dual Layout Compatible with SC1152
Designed to meet Intel specification of VRM8.2
& VRM8.3 for Pentium II™
On board DAC programs the output voltage
from 1.3V to 3.5V (US3010) & 1.8V to 3.5V for
US3010A
Loss less Short Circuit Protection
Synchronous operation allows maximum effi-
ciency
Patented architecture allows fixed frequency
operation as well as 100% duty cycle during
dynamic load
Over Voltage Protection Output
Soft Start
High current totem pole driver for direct driv-
ing of the external Power MOSFET
Power Good function
APPLICATIONS
Pentium II & Pentium Pro™ processor DC to DC
converter application
Low cost Pentium with AGP
The US3010 family of controller ICs are specifically de-
signed to meet Intel specification for Pentium II™ and
Pentium Pro™ microprocessor applications as well as
the next generation P6 family processors. These prod-
ucts feature a patented topology that in combination
with a few external components as shown in the typical
application circuit ,will provide in excess of 16A of out-
put current for an on- board DC/DC converter while auto-
matically providing the right output voltage via the 5 bit
internal DAC .These devices also feature, loss less cur-
rent sensing by using the Rds-on of the high side
Power MOSFET as the sensing resistor, a Power Good
window comparator that switches its open collector out-
put low when the output is outside of a ±10% window
and an OVP output. Other features of the device are ;
Undervoltage lockout for both 5V and 12V supplies , an
external programmable soft start function as well as pro-
gramming the oscillator frequency by using an external
capacitor.
TYPICAL APPLICATION
5V
C1
L1
C5
C3
Q1
R2
R3
R4
R5
L2 R8
R7 R10
C7
R9
Q2
R6
C8
C10
C4 C6
12V
R1
C2
VID4
VID3
VID2
VID1
VID0
12
V12
9 NC
2
V5
13 SS/BstH
D4 D3
16 17
6
CS+
D2
18
8 5 11 10
HDrv CS- LDrv Gnd
US3010
NC/ Ct/
D1 D0 PGndH AGnd
19 20
7
1
15
Vfb
En 14
PGd 4
OVP
3
R11 C9
R12
R13
C11
3010app1-1.1
OutEn
Power Good
OVP
Notes: Pentium II and Pentium Pro are
trade marks of Intel Corp.
PACKAGE ORDER INFORMATION
Ta (°C)
0 TO 70
0 TO 70
Device
US3010CW
US3010ACW
Package
20 pin Plastic SOIC WB
20 pin Plastic SOIC WB
VID Voltage Range
1.3V to 3.5V
1.8V to 3.5V
Rev. 1.1
5/18/98
4-1
1 Page US3010/3010A
UVLO Section
UVLO Threshold-12V
Supply ramping up
UVLO Hysterises-12V
UVLO Threshold-5V
Supply ramping up
UVLO Hysterises-5V
Error Comparator Section
Input bias current
Input Offset Voltage
Delay to Output
Vdiff=10mV
Current Limit Section
C.S Threshold Set Current
C.S Comp Offset Voltage
Hiccup Duty Cycle
Css=0.1 uF
Supply Current
Operating Supply Current
CL=3000pF
V5
V12
Output Drivers Section
Rise Time
CL=3000pF
Fall Time
CL=3000pF
Dead band Time
CL=3000pF
Oscillator Section
Osc Frequency
Ct=150pF
Osc Valley
Osc Peak
Output Enable Section
Pull up Resistor to V5
HI Threshold Voltage
LO Threshold Voltage
Over Voltage Section
OVP Drive Current
Note 1: Vs refers to the set point voltage given in Table 1.
9.2 10
10.8
0.3 0.4 0.5
4.1 4.3 4.5
0.2 0.3 0.4
2
-2 +2
100
160 200 240
-5 +5
2
20
14
70 100
70 130
100 200 300
190 220 250
0.2
V5
35
2
0.8
50
D4 D3 D2 D1 D0 Vs
D4 D3 D2
0 1 1 1 1 1.30*
111
0 1 1 1 0 1.35*
111
0 1 1 0 1 1.40*
111
0 1 1 0 0 1.45*
111
0 1 0 1 1 1.50*
110
0 1 0 1 0 1.55*
110
0 1 0 0 1 1.60*
110
0 1 0 0 0 1.65*
110
0 0 1 1 1 1.70*
101
0 0 1 1 0 1.75*
101
0 0 1 0 1 1.80
101
0 0 1 0 0 1.85
101
0 0 0 1 1 1.90
100
0 0 0 1 0 1.95
100
0 0 0 0 1 2.00
100
0 0 0 0 0 2.05
100
* Output voltage is disabled for US3010A.
** Output voltage is disabled for all versions.
Table 1 - Set point voltage vs. VID codes
D1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
D0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
V
V
V
V
uA
mV
nS
uA
mV
%
mA
nS
nS
nS
Khz
V
V
kΩ
V
V
mA
Vs
**
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
Rev. 1.1
5/18/98
4-3
3Pages US3010/3010A
TYPICAL APPLICATION
SYNCHRONOUS OPERATION
(Dual Layout with SC1152)
5V
C1
L1
C5
C3
Q1
R2
R3
R4
R5
L2 R8
R7 R10
C7
R9
Q2
R6
C8
C10
12V
C4
C6
R1
C2
VID4
VID3
VID2
VID1
VID0
12
V12
9 NC
2
V5
13 SS/BstH
D4 D3
16 17
6
CS+
D2
18
85
HDrv CS-
US3010
D1 D0
19 20
11 10
LDrv Gnd
NC/ Ct/
PGndH AGnd
71
15
Vfb
En 14
PGd 4
OVP
3
R11 C9
R12
R13
C11
3010app1-1.1
OutEn
Power Good
OVP
Figure 2- Typical application of US3010/3010A in an on board DC-DC converter providing the Core supply for the
Pentium II microprocessor.
Table of components that need to be modified to make the dual layout work for US3010A* and SC1152.
Part # R1 R2 R4 R7 R8
SC1152 S O O V V
US3010A* O V S O S
R9 R10 R11 C2 C5 C8 C9
V V S OOV O
OOOV V OV
S - Short
O - Open
V - See Unisem or Semtech parts list for the value.
* Table also applies to the none "A" version of the part.
Note 1 : R8 can be replaced with shorting wire of #20 AWG or lower. This elliminates the expensive current
sense resistor that otherwise is needed with SC1152.
4-6
Rev. 1.1
5/18/98
6 Page | |||
ページ | 合計 : 11 ページ | ||
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PDF ダウンロード | [ US3010 データシート.PDF ] |
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