LTC3734 Datasheet, PDF (2/28 Pages) Linear Technology – Single-Phase, High Efficiency DC/DC Controller for Intel Mobile CPUs

LTC3734
ABSOLUTE AXI U RATI GS
(Note 1)
Input Supply Voltage (PV_CC, SV_CC) ............. 7V to – 0.3V
Topside Driver Voltages (BOOST) ..............38V to – 0.3V
Switch Voltage (SW) ....................................32V to – 5V
Boosted Driver Voltages (BOOST-SW) ........7V to – 0.3V
DPRSLPVR, STP_CPUB, MCH_PG, PGOOD,
RDPRSLP, RDPSLP, RBOOT Voltages ........5V to – 0.3V
RUN/SS, FREQSET, PSIB Voltages ..............7V to – 0.3V
VID0-VID5 Voltages .....................................5V to – 0.3V
V_FB Voltage ................................................. 2V to – 0.3V
V_OA+, V_OA– Voltage ................................... 3.6V to –0.3V
Peak Gate Drive Current <1μs (TG, BG) ..................... 5A
Operating Ambient Temperature Range
(Note 2) .................................................. – 40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................. – 65°C to 125°C
Reflow Peak Body Temperature ............................ 245°C
UW U
PACKAGE/ORDER I FOR ATIO
V_OA+ 1
V_OA– 2
OAOUT 3
STP_CPUB 4
SGND 5
SENSE⁺ 6
SENSE ^– 7
32 31 30 29 28 27 26 25
24
23
22
21
33
20
19
18
TG
SW
PV_CC
BG
PGND
VID5
VID4
RDPRSLP 8
17 VID3
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 33) IS GROUND
MUST BE SOLDERED TO PCB
ORDER PART
NUMBER
UH PART
MARKING
LTC3734EUH
3734
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_PVCC = V_SVCC = 5V, V_RUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
Main Control Loop
Reference
V_SENSEMAX
V_LOADREG
Regulated Feedback Voltage
Maximum Current Sense Threshold
Output Voltage Load Regulation
V_REFLNREG
V_PSIB
I_PSIB
V_OVL
g_m
g_mOL
V_ACTIVE
Reference Voltage Line Regulation
Forced Continuous Threshold
Forced Continuous Current
Output Overvoltage Threshold
Transconductance Amplifier g_m
Transconductance Amplifier Gain
Output Voltage in Active Mode
I_TH Voltage = 0.5V; Measured at V_FB (Note 4)
I_TH Voltage = Max; V_CM = 1.7V
●
(Note 4)
Measured in Servo Loop, ΔI_TH Voltage: 1.2V to 0.7V ●
Measured in Servo Loop, ΔI_TH Voltage: 1.2V to 2V ●
V_PVCC = V_SVCC = 4.5V to 7V
V_PSIB = 0V
Measured with Respect to V_FB = 0.6V
I_TH = 1.2V, Sink/Source 25μA (Note 4)
●
I_TH = 1.2V, (g_m • Z_L; No Ext Load) (Note 4)
VID = 010110, I_TH = 0.5V (0°C – 85°C)
VID = 010110, I_TH = 0.5V (Note 2)
●
59
0.57
0.64
4.5
1.342
1.336
0.600
V
72
85
mV
0.1
– 0.1
0.02
0.6
– 0.5
0.66
6
3
1.356
1.356
0.5
– 0.5
0.1
0.63
–1
0.68
7.5
1.370
1.376
%
%
%/V
V
μA
V
mmho
V/mV
V
V
3734f
2