sc1406a Semtech Corporation, sc1406a Datasheet - Page 7

• Manufacturer Part Number: sc1406a
• Description: Portable Pentium Ii & Iii Power Supply Controller
• Manufacturer: Semtech Corporation

January 28, 2000
ELECTRICAL CHARACTERISTICS (CONT.)
Unless specified: -0 < T
PARAMETER
1.5V Linear Regulator Controller
Input Bias Current
Output Voltage
C
or 150µF, 45m ESR max
Capacitance tolerance = 20%
Base Drive Output Current
2.5V Linear Regulator Controller
Input Bias Current
Output Voltage
C
ESR range = 1m
Capacitance tolerance = 20%
Base Drive Output Current
Linear Regulator Soft Start (LRSS)
Linear Reg Soft-Start Current
Enable Threshold
Soft Start Termination Threshold
Voltage Clamp (VCIN, VCOUT, VCBYP)
Input Voltage
Output Voltage
Imin = 10µA
Progagation Delay**
* Guaranteed by design.
**Guaranteed by characterization.
© 2000 SEMTECH CORP.
O_1.5
O_2.5
= 56µF, 20m
= 1µFceramic
A
< 100°C ; V
ESR max
30m
CC
= 3.3V (See test circuit)
Imax=0.1A
SYMBOL
LINEAR REGULATOR CONTROLLERS
Imin = 0A
VCIN_VCOUT
V
V
V
V
I
I
0.1mA
Imin =
V
BASE_1.5
BASE_2.5
V
V
H_VCOUT
SSLR_EN
TH_LRSS
L_VCOUT
I
I
I
H_VCIN
LRSS
T
LR15
O_1.5,
LR25
O_2.5,
pd
PORTABLE PENTIUM
POWER SUPPLY CONTROLLER
I
O
Measured from 50% of VCIN step to
I
O
C
= 500mA, pnp BJT with B
Discharge Current, V
tied to V
= Imax, pnp BJT with B
R
VCBYP
R
I
VCOUT
VCOUT
Charge Current, V
VCIN
0.175V to 1.50V and back.
50% of VCOUT transient
EN is low or in UVLO
= 1500pF, VCIN steps from
= -10µA
= 150 tied to V
652 MITCHELL ROAD
= 150
S
CONDITIONS
= 2.5V
V
V
I
I
C
FB_25
C
FB_15
@ 25° C
Pentium is a registered trademark of Intel Corporation
= 500mA
= 100mA
= 1.5V
= 2.5V
LRSS
V
LRSS
VCIN is open 0.8V
VCIN
S
®
MIN
= 1.50V,
MIN
= 0V
= 2.5V
II & III
= 0.175V
> 50 @
> 50 @
NEWBURY PARK CA 91320
1.47 1.50 1.54
2.45 2.50 2.55
1.53 1.70 1.87
0.93
MIN TYP MAX UNIT
-0.6
2.5
0.3
10
S
150
1.5
-1
1
SC1406A
0.375
1.60
120
400
20
V
10
1
1
S
mA
mA
mA
mA
mA
mV
µA
ns
V
V
V
V
V
7