ADP3212 ON Semiconductor, ADP3212 Datasheet - Page 5

• Manufacturer Part Number: ADP3212
• Description: 7-bit Programmable, 3-phase,mobile Cpu Synchronous Buck Controller
• Manufacturer: ON Semiconductor

Parameter
CURRENT CONTROL
CURRENT-SENSE AMPLIFIER
(CSAMP)
CURRENT MONITORING
and PROTECTION
CURRENT REFERENCE
CURRENT LIMITER (OCP)
CURRENT MONITOR
CSREF Crowbar Voltage
Threshold
CSREF Reverse Voltage
Threshold
PWRGD Low Voltage
PWRGD High, Leakage
Current
PWRGD Start-up Delay
PWRGD Latch-off Delay
PWRGD Propagation Delay
Crowbar Latch-off Delay
PWRGD Masking Time
CSREF Soft-stop Resistance
CSREF Bias Current
CSCOMP Voltage Range
CSCOMP Current
CSCOMP Slew Rate
Gain Bandwidth
IREF Voltage
Current Limit (OCP)
Threshold
Current Limit Latch-off Delay
Current Gain Accuracy
CSSUM, CSREF Common-
CSSUM, CSREF Offset Voltage
CSSUM Bias Current
Mode Range
2
2
2
2
2
3
Symbol
V
V
V
I
T
T
T
T
V
I
I
I
I
GBW
V
V
I
PWRGD
BCSSUM
BCSREF
CSCOMPsource
CSCOMPsink
MON
SSPWRGD
LOFFPWRGD
PDPWRGD
LOFFCB
CBCSREF
RVCSREF
PWRGD
OSCSA
REF
LIMTH
/I
CSA
LIM
Conditions
Relative to FBRTN, V
Relative to FBRTN, V
Relative to FBRTN, Latch-off mode
CSREF is falling
CSREF is rising
I
V
Measured from CLKEN# neg edge to PWRGD pos
edge
Measured from Out-off-Good-Window event to
Latch-off (switching stops)
Measured from Out-off-Good-Window event to
PWRGD neg edge
Measured from Crowbar event to Latch-off
(switching stops)
Triggered by any VID change or OCP event
EN = L or Latch-off condition
Voltage range of interest
CSREF – CSSUM , T
Voltage range of interest
CSCOMP = 2 V,
CSSUM forced 200 mV below CSREF
CSSUM forced 200 mV above CSREF
C
configuration
CSSUM forced 200 mV below CSREF
CSSUM forced 200 mV above CSREF
Non-inverting unit gain configuration
R
R
Measured from CSCOMP to CSREF, R
3-ph configuration, PSI = H
3-ph configuration, PSI = L
2-ph configuration, PSI = H
2-ph configuration, PSI = L
1-ph configuration
Measured from OCP event to PWRGD de-assertion
Measured from ILIM to IMON
I
I
PWRGD(SINK)
LIM
LIM
PWRDG
FB
REF
CSCOMP
= 1 kOhm
= −20 μA
= −10 μA
= 80 kΩ to set I
= 5 V
= 10 pF, CSREF = VDAC, Open loop
Rev. SpA | Page 5 of 43
= 4 mA
A
REF
= −40C to 85C
VID
VID
= 20 uA
> 1.1 V
≤ 1.1 V
LIM
= 1.5 kΩ,
ADP3212/NCP3218
Min
1.5
1.3
−370
0
−1.2
−20
−3
0.05
1.55
−75
−22
−75
−36
−75
3.7
3.6
Typ
1.55
1.35
−300
−75
85
8
120
200
200
100
70
−750
1
20
−20
20
1.6
−90
−30
−90
−45
−90
120
4
4
Max
1.6
1.4
−10
250
1
2
+1.2
+20
+3
2
1.65
−106
−38
−106
−54
−106
4.3
4.4
Units
V
V
mV
mV
mV
μA
ms
μs
ns
ns
μs
Ω
V
mV
nA
μA
V
μA
mA
V/μs
V/μs
MHz
V
mV
mV
mV
mV
μs
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